Most people who go through a divorce can point to one moment that felt like the breaking point. But research consistently shows that marriages rarely end for a single reason. The causes tend to accumulate over years, overlapping and reinforcing each other until the relationship can’t hold. Understanding those patterns doesn’t make the decision easier, but it can make it feel less isolating.
If you’re in Florida, there’s a legal reality worth knowing from the start: the reason your marriage ended doesn’t need to be proven in court. Florida is a no-fault divorce state under Florida Statutes Section 61.052. The ground virtually every divorcing spouse relies on is that the marriage is “irretrievably broken.” Neither spouse has to establish fault. The personal reasons behind the breakdown matter deeply on a human level, but they don’t determine whether a divorce can proceed. That said, the Florida Bar notes that in limited circumstances (certain alimony determinations and equitable distribution of marital assets) the reasons behind the breakdown may be relevant.
What the Research Actually Says About Why Marriages End
Decades of survey research on divorce has produced a fairly consistent picture. Causes tend to cluster around a handful of recurring themes: commitment, incompatibility, communication, infidelity, financial conflict, substance abuse, and abuse. Most divorcing individuals report more than one reason, and the reason couples agree on most often is lack of commitment.
One frequently cited study found that up to 85% of participants identified lack of commitment as a major contributing factor. That figure alone reframes how we typically think about why marriages fail. It’s not always a dramatic event. Often it’s a gradual withdrawal.
Lack of Commitment
Lack of commitment is the most commonly cited reason for divorce across multiple research studies, and it’s the reason divorcing couples are most likely to agree on. It doesn’t always announce itself clearly. It can look like avoidance of difficult conversations, a gradual shift of energy away from the marriage, or an unwillingness to repair what’s broken.
Over time, that pattern of disengagement can erode a relationship even when no single dramatic event occurs. By the time one or both spouses recognize what has happened, the distance can feel insurmountable. Under Florida’s no-fault standard, one spouse’s statement that the marriage is irretrievably broken is enough for the court to proceed.
Infidelity
Infidelity ends marriages, but research suggests it rarely acts alone. Studies show that approximately 34% of marriages ended in part due to an affair, and in most of those cases, other problems had been accumulating beforehand. Infidelity is frequently the final event rather than the first cause, clustering with unresolved conflict, incompatibility, and sometimes substance abuse. The breach of trust is real and often irreparable, but the conditions that preceded it matter too.
Incompatibility & Growing Apart
Up to 55% of divorced individuals in research studies cite growing apart or incompatibility as a reason their marriage ended. This category is broad by nature. It can include diverging values, different priorities around parenting or finances, marrying young before either person had fully developed a sense of self, or simply discovering over time that two people want fundamentally different things.
What makes incompatibility difficult to address is that it often develops gradually and stays below the surface until other issues bring it into focus. A couple might spend years arguing about money or parenting styles without recognizing that the underlying problem is a values mismatch predating those specific conflicts. By the time incompatibility is clearly named, communication and intimacy have usually suffered alongside it.
Communication Breakdown
Approximately 50% of participants across multiple divorce studies cited communication problems as a contributing factor, including persistent arguments and an inability to work through conflict productively. Communication breakdown is both a cause and a symptom. Poor communication makes every other problem harder to resolve, and unresolved problems make communication worse.
Repeated arguments that cycle through the same issues without resolution are a well-documented pattern in marriages that later end in divorce. Over time, those cycles produce resentment that makes even ordinary disagreements feel loaded. What began as a style difference can eventually leave spouses feeling like strangers who share a household.
Financial Strains
About 40% of people in divorce studies cite financial problems as a major reason their marriage ended. Financial incompatibility covers a wide range of situations: hidden spending, disagreements about saving and investing, income disparities that create unequal power dynamics, and high-cost debt that limits a family’s options. The conflict is rarely just about money in isolation. It’s about values, priorities, and trust.
In Florida divorces, financial issues don’t disappear once the marriage ends. Each party is required to provide financial affidavits and mandatory disclosures within 45 days of service of the divorce petition. The disagreements that drove the divorce often resurface during property division and alimony negotiations. Florida follows an equitable distribution standard for dividing marital assets and debts, which requires a clear picture of what both spouses own, owe, and earn.
Lack of Intimacy
Research from one study found that 15% of men and 27% of women reported no sexual activity in the past year. Lack of physical intimacy is frequently cited alongside emotional disconnection, and the two tend to reinforce each other. When communication breaks down or conflict becomes chronic, physical closeness often diminishes as well.
Intimacy loss is typically a symptom of other unresolved problems rather than a standalone cause. Without physical and emotional closeness, the risk of drifting apart and the risk of infidelity both increase. Couples who identify this pattern early sometimes seek counseling; for others, the distance has already become too wide by the time it’s recognized.
Domestic Violence & Abuse
Between 15% and 25% of participants across various studies cited domestic violence as a significant reason for their divorce. The disparity by gender is striking: in one national study, 42% of women cited abuse as a reason compared to 9% of men. In research focused on older divorced couples, more than a third cited verbal, emotional, or physical abuse as one of their three main reasons for ending the marriage.
Domestic violence includes physical, emotional, and verbal abuse. Florida courts take evidence of domestic violence seriously in parenting plan determinations under Florida Statutes Section 61.13, which directs courts to consider any history of domestic violence when establishing time-sharing arrangements. Individuals in dangerous situations should contact the National Domestic Violence Hotline at 1-800-799-7233 before initiating legal proceedings to ensure safety planning is in place.
Addiction
Between 10% and 35% of people in various divorce studies cited a spouse’s drinking or drug use as a significant reason for the end of their marriage. Addiction to gambling or other behaviors can be equally damaging. The harm isn’t limited to the addiction itself. It compounds across multiple dimensions: compromised decision-making, eroded trust, emotional unavailability, and serious financial strain that accumulates over years.
Under Florida Statutes Section 61.13, substance abuse and its effects on a child’s wellbeing are among the factors courts consider when establishing parenting plans and time-sharing schedules. When one parent’s addiction is part of the divorce picture, it becomes directly relevant not just to the marital breakdown but to how custody arrangements are structured going forward.
What These Reasons Mean for Your Florida Divorce
Florida has been a no-fault divorce state since 1971. Under Florida Statutes Section 61.052, neither spouse is required to prove fault, assign blame, or cite any of the personal reasons discussed above. One spouse’s sworn statement that the marriage can’t be saved is legally sufficient for the court to proceed.
That said, the process involves more than a single filing. At least one spouse must have been a Florida resident for six months before filing. Mandatory financial disclosures must be exchanged within 45 days of service of the petition. Mediation is typically required before contested matters are heard by the court. Property division follows Florida’s equitable distribution standard, and alimony, child support, and parenting plan determinations each carry their own legal framework and factual considerations.
The reasons a marriage ended don’t disappear when the legal process begins. They often shape how negotiations unfold, what issues feel most urgent, and what a workable resolution actually looks like for the family involved. Understanding both the personal and legal dimensions from the start helps people make clearer decisions rather than reactive ones.
We appear regularly in Miami-Dade family court divisions, including at the Lawson E. Thomas Courthouse Center, and our attorneys have decades of combined experience handling contested and uncontested divorces throughout Miami-Dade, Broward, Monroe, and Palm Beach counties. Our practice is centered exclusively on family law, and that focus shapes how we prepare every case. If you’re thinking through what comes next, Orshan, Spann & Fernandez-Mesa is available at (305) 853-9161 to talk through your situation and what the process looks like under Florida law.