Not in day to day life but in the bedroom its a must
I agree with the "day to day" part. With my sig other....we started in a dom/sub type of way but mutual love and respect developed so that the dom/sub act became too ****** and contrived to be erotic. When push comes to shove lust gives way to love, at least for me.
I think we evolved in conflicting ways. For example, a man can ******* himself on a woman....then an hour later on another woman, etc....favoring procreation. But a more sophisticated evolution favored affection accompanying the sex act so that the male stays with the woman which favors survival of the young.
Now we are a conflicted mix of inherited traits.