The question about "male hookers" is fair but the reason is probably more physiological than anything else. I mean most males simply can't sleep with unattractive women (and I hope I don't have to explain the reasons for that - maybe there are medical workarounds for that but I have no idea about the efficiency) while women can. The demand is probably unbalanced, too, but I'm sure it's not completely, um, satisfied on women's side.
As long as we can still acknowledge that there are differences and deal rationally with them, the humanity will be all right.