Divorce is known to be as a huge suicide risk for men in particular.

https://www.psychologytoday.com/us/blog/acquainted-the-night/201906/divorce-is-risk-factor-suicide-especially-men

Men in general seem to take divorce way more seriously than women.

It's because men have an idealized view of marriage. Lots of men are miserable in their marriages but they still don't want to get divorced. This is proven by the fact that lesbian couples also have a fairly high divorce rate.

https://en.wikipedia.org/wiki/Divorce\_of\_same-sex\_couples

Maybe they should stop seeing divorce as a moral failing. She's not yours, it's just your turn. Always keep in the back of your head that divorce is an option that can happen even if you think you're a great husband. It's not that serious.