JtS, you are a sweetheart.

Raping a 900 women a year (roughly three a day, which is maintainable), and taking care of one you don't rape, gets you a LOT more genes into the next generation than just taking care of the one you don't rape. And both rape and its proscription are human universals.

And women are wired to keep the strongest man around - and who is showing strength, the one who beats you or the other one? But you didn't argue with that one...