For me personally: Ape man strong, ape man protect woman, woman trust ape man

(D/s is about freely giving up power and I can only do so with a partner I trust completely, so it adds another level of intimacy. Plus being manhandled is kinda hot. And it plays into the fantasy of "being put in my place", but that's just my personal thing)

(And, as some have already said, it's not necessarily "most women", it's just more known/socially acceptable for women to be into being dominated)