That's very true but only because males are behaving more and more like females.

Being a house husband doesn't bode well with psychological traits where the extremes sit in the male population (which are responsible for things like men doing all the dangerous jobs, men being most of the inmates in prisons, men being the ones most likely to die in war).

I certainly hated my paternity leave and, anecdotally, I've heard from many peers who would have preferred to just work over taking care of their children. It's fine for a limited amount of time, but I can't tolerate that full time.