With the suggestion that "evolutionary psychology" isn't involved in men seeking higher income jobs, why is there an extreme correlation between income for men and having children, but not for women? Why is it that society reward rich men with larger social network, while women has on average larger social network than men that is not associated with income? perhaps, as people say, "Poor men aren't as attractive"...

> So I'm going to stick with sexism because it is most likely the correct answer.

Personally I am sticking to the incentive model. A woman who prioritize other aspect in their work and personal life over income does not have fewer children, has the same social network size as other women, and get similar respect in society at old age. For men the opposite is true, where a man who make the same choices would end up (statistically) at the bottom of society, alone, childless, with no respect in old age. As a result low income men also has a lower life expectancy. Pretty strong incentives if you ask me.