Nah, there's always room to recontextualize. In this case... Vampires are often a metaphor for sexual deviancy. If you're part of a group that is viewed as sexually deviant, then maybe you'd sympathize with vampires. I think vampire romance is so popular with women (and teen girls) because female sexuality is so stigmatized. (unless it's for male pleasure) Vampires are unashamed in their sexuality, so it's an appealing fantasy.

Sure, there are other aspects to the fantasy as well, but the sexuality of vampires plays into the traditional depictions.