Earlier quoted context omitted.
In the US, researchers estimate that 41% of all first marriages end in divorce [1]. I guess it's technically true that divorces are in the minority, but it does sound like there's a lot of regret there. [1] https://www.wf-lawyers.com/divorce-statistics-and-facts/
Divorce doesn't mean regret though. You can have a wonderful time with a partner and then decide the you want something else later, at a different point in life.
- Lack of commitment 73%
- Argue too much 56%
- Infidelity 55%
- Married too young 46%
- Unrealistic expectations 45%
- Lack of equality in the relationship 44%
- Lack of preparation for marriage 41%
- Domestic Violence or Abuse 25%
(Respondents often cited more that one reason, therefore the percentages add up to much more than 100 percent)
All of those seem like regretful reasons to me. There's no evidence that unregretful reasons are a significant factor in divorces (even anecdotally I've never heard of this, but if you know one then I'd find that pretty interesting). Still sounds like there's a lot of regret out there.