isnt acting civilized just what people do to get what they need or want? we call ourselves civilized, but we play by the rules of the day, just like every other poor slob for 1000s of years. our nature is no different or better. society may be more or less efficient, or violent, but we, we are the same, playing the game to live and breed.
i can imagine a distant relative of mine from a.d. 700, living in some shitty town g-d knows where, just trying to make it in society, same as me.
im no better or worse than he is, in my nature.
so, if the rules allowed a particlar man many sex partners, i would say his nature would likely be in accord with that. now, in ad 700, and forever into the past and future