Thread: If animal cruelty laws prohibit bestiality, why don't they prohibit factory farming?

From the genes-eye-view, sex with another species carries all of the risks and none of the benefits of sex with your own species. It's pure danger with no evolutionary payoff. Eating meat, on the other hand, has a payoff.

Moral disgust (in cases like this) is essentially nothing more than physical disgust in the form of social pressure. It reenforces physical disgust in case it's not enough to prevent a behavior that is overly risky.