I'm really not sure what would qualify one to be a slut or a man whore. Is it a raw number or just an attitude toward sex? In either case, I don't think I am one, not that I have anything against it. As long as you're safe, your choices about how and when you seek pleasure and satisfaction are up to you.
I guess my philosophy has always been that if all I want to do is get off, I can and very often do manage that quite enjoyably on my own without all the risks and drama sometimes come with finding hookup partners. Once in a while I'll go for it, though, just for a change of pace. Usually, I save the major contact for people I'm in a relationship with or with whom there's at least a chance that might happen.