cheating wives and pregnancy
Empirically, we know women not ovulating prefer effeminate, nurturing males for stable relationships. But women ovulating prefer masculine alpha males to gratify ephemeral lust--and that they're likely to stray from committed relationships when in heat. It is therefore the natural order of things that beta males should wittingly or unwittingly rear the offspring of their betters. Few things rival the splendor of a woman impregnated by a man not her husband. It is right, just, fair, good--and sublimely beautiful.