It's much more than that, and a fundamental reason why it makes sense for older men to have families with younger women: Older men have proven that they don't have mental illness, which might not manifest until a male is like 25 years old b/c males physically mature at later ages than females. And, older men have settled habits that a women can rely upon if those habits are good. Those habits can be how they habitually work with others (proven in their career), to personal hygiene habits. Your articles doesn't really touch on age differences, but these are all very compelling reasons why it seems actually most normal for older men to settle down, while biologically it is best for females to have babies in their early 20s. But then this gets to another point: Frankly, I am uninterested in the interests and opinions of women who do not want children: https://medium.com/non-violence/stakeholder-control-deliberately-childless-adults-impoverish-everyone-need-global-poor-to-remain-a0e98126c133