Because usually they're guys I didn't realize I was going on a date with and didn't want to date and I don't know how to say 'oh, hey, I didn't realize you were hitting on me'. I've never met a guy I wanted to date that wants to date me. I like geeks, and I guess based on my looks, only grrrargh guys and evil types want me. Or mansluts, I had a drink with one of those the other day and ran away from him.