Bj was always more of a luxury thing you got from the woman now and again. It showed that she was completely submitted to you. Plus, it gave one woman something to do when you were f*cking more than one woman, whether buying prostitutes or having a harem. It's not necessary in the grand scheme of things. But going down on a woman has always been a submissive state for a man, and I never subscribed to it. And for the men who say they like doing it no matter what the woman thinks, you're still doing it to please the woman as the fundamental drive. At least with bondage, the man gets off on torturing the woman. That makes sense.