Good god NO I wouldn't want that! You can go do private rp if that's your thing. I think there are enough whores and stories involving them as it is (all of them female of course). I don't want even more glorification of prostitution or more women referred to as "bed warmers".
This is just me though, and it's something I find disgusting. It'd make me sick to my stomach and I already have to tolerate what's in the game right now. If it were implemented however, there's nothing I could do, or try to do, about it. I will never push my values on others. People should be allowed to do whatever they want with their bodies or game characters. I'm only saying that it's nothing I'd want to see or them wasting resources on.
edit: I just want to add that if someone is offended by the word whore, remember that it's used in the game as well.