Except I don’t think monogamy is a recent thing.
Strong and united family has always been a core condition to survival for mankind, so men have also been incentivized to have a single woman to preserve the family, it’s not a new thing.
Or at least it’s not a no brainer thing that men are deeply programmed to have multiple sex partners, because their are incentives in both ways. And I’m not even sure that porn suppress the need to see many women for men, on the contrary…