Men are sluts

[Pie]

It all comes back to the "baby daddy" question -- biologically & culturally, men don't want to be investing in raising a child that isn't theirs.

Back in "the good old days", the one way to insure that the baby was yours is to make it damn expensive (in terms of cultural capital) for the woman to play around. Doesn't matter if he plays around; any result is not his problem.

Today, we claim to be high-minded and egalitarian, but the veneer is awful thin. We do (overtly) look down on women who have children by a large number of men. We look askance at women who only sleep with them, and don't procreate.

Religion only served as a codification of the views imposed by biology.