Rape in ancient societies was generally considered to be one of the worst of crimes.

As long as the victim was a member of that society.

The enslavement (and rape) of foreign women taken captive in war was regarded as perfectly normal.

With "instinct," "hardwiring," "genetic determinism," "genetic survival mechanisms," etc., all supposedly working together for thousands of years in a nearly ideal environment for success, how on earth did men ever legislate any kind of rape to be any kind of a crime?

Answer: because rape isn't hardwired into the human brain.