I’m not saying that doesn’t happen, but that is not even a remotely typical relationship whatsoever among those kinds of men unless the wife completely let herself go for years and is extremely passive aggressive (or openly abusive). I’d agree those types of men (high IQ type A borderline sociopathic personalities) are more likely to cheat on their spouses, but also not have sex with their wife? That is almost certainly less than 1% of relationships with top 5% earners (say men making more than $150k/yr).
Because they are statistically fewer in number does not erase the fact that they exist, as I pointed out before, in enough numbers to have made me comment about it, based on specific research into marriage stats that I did in grad school. The comment that prompted me to say it was that women are the ones who cut off sex and then dump the man and clean the man out.
My point in bringing it up is that regardless of the sex disparity in outcomes, such as women getting custody more frequently than men, is that many factors come into play. When you remove sex from the equation and look at the power differential between spouses, such as the high-earning wife married to a man who is the primary child caretaker in the family, you see divorce decree outcomes more similar to the power-male/dependent female situation. There are differences that another post mentioned above when one or both of the couple don’t really want the children.
The system is wildly erratic, with the temperament of judges entering in; but the relative power, wealth or other resources (extended family with connections; available family who can babysit; etc) of one partner over the other has more to do with determining outcomes than any objective standard at law.
The fact that women are awarded primary custody more than men also has less to do with sex and more to do with circumstances and the vestiges of the old system in which the wife delivers more or most of the childcare during the marriage.