>Is the implication here that this is not already the case? I think you are marginalizing the many variable preferences that people have when choosing partners. There is no general set of optimal human traits.

Marriage limits a man to one women, IVF would allow one man to impregnate essentially infinite women and other factors like personality wouldn't factor into the OPs nearly anonymous genetic propositioning.

>This is very perplexing. Men do a lot more than just make babies, so why then would their productivity disappear if they cant make babies anymore. "Uh, hey ma,n we cant have kids anymore so lets go rioting?"

Yes, look into the studies on young men in the US and Japan who are coasting because they see no reason to work hard. They have video games and are happy. The alternative to apathy is violence. Neither is good for society, apathy leads to lack of progress and violence destroys society

https://qz.com/186066/this-lost-generation-of-young-men-is-t...