Are people happier after divorce?
On average people recover substantially but not completely, and the average conceals two very different groups. Some people are meaningfully better off. Some are not. The largest long-running study found life satisfaction dips around the separation and then climbs back without quite reaching its pre-divorce level even six years later, some of which reflects differences that were already there beforehand. What it is not is a population that is uniformly happier or uniformly worse.
Which is unsatisfying, and it is more honest than the confident numbers you will find in either direction.
Why the statistics are worth distrusting
Search this and you will get percentages that contradict each other. They come from different populations, different definitions of happiness, and different follow-up periods. Some are drawn from surveys of people who volunteered to answer, which selects for people with something to say.
You will also find figures about regret, usually a single number passed between content sites for years without a source. How to judge divorce advice covers why this topic in particular attracts them: it is emotionally urgent and easy to write about confidently.
What does seem to separate the groups
More useful than an average, and reasonably consistent across the research.
Whether the marriage was high-conflict. Leaving a genuinely hostile or abusive marriage is associated with real improvement. Ending a low-conflict but unhappy one is associated with lower satisfaction on average rather than merely a mixed result, and in the study that measured it the improving group was a minority. That is the honest and uncomfortable finding.
Financial stability afterward. Money is not happiness, and financial precarity is a reliable source of unhappiness. This is the factor most within reach, which is why rebuilding deliberately matters more than it sounds.
Whether there is support. People with friends, family, or a therapist recover better than people going through it alone, by a wide margin.
Time. Most measures improve with it. Asking the question in year one gets a different answer from year five, and almost everybody asks it in year one.
Whether the co-parenting relationship works. For parents this shapes daily life more than almost anything else in a settlement.
What about regret
Some people regret it. Some regret staying as long as they did. Both are common and neither is the headline the internet makes of them.
The regret people describe most often is not the decision itself. It is how it was done: what was said in front of the children, money spent fighting over things that did not matter, a settlement agreed while exhausted just to make it stop. That is worth knowing because it is the part still in your control.
The version of the question actually being asked
Usually not "what does the research say." Usually: am I going to be alright.
The evidence there is more encouraging. Most people, given time and something like stability, arrive somewhere they can live. Not the life they planned, and not ruined either. The people who struggle longest tend to be the ones who went through it isolated or in financial free-fall, and both of those are things other people can help with.
If you are asking this question at three in the morning, that is not a research problem. Recovery takes longer than people expect and does not run in a straight line, and if it is heavier than that, the support page has people who are there at three in the morning.
This is a summary of a genuinely mixed body of research, not a prediction about you. Divorcery is not a reason to have a divorce, and nothing here is a recommendation either way.