Something I read in the book "Smart Boys" was that exceptionally gifted men have a harder time staying married because they see a spouse as one more achievement. This theory fits modern parenting research that says we need to focus on what's inside, not on achievement. (you know, like my son's t-ball team didn't keep score at all this season). But, I don't know. I know divorced people. I don't think the #1 cause was an achievement mindset.
Just brought it up because marriage is a big part of many adult lives.

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar