I did know a chick that was into porn. A couple, actually, but one was an internet chick and had some issues. The other I erm, had a few... "encounters" with, and she was really into me for a while, but it never, ever would have worked out so we eventually wisely dropped it. She's married with a kid now. It's funny, all of my ex-girlfriends are now married, and all but one of them have children. Fucking scary.
Anyway... yeah. There are definitely chicks out there that like porn, it's just most of them are either lesbians or have issues.