I always thought of vampires, especially the young-adult ones, as a metaphor for sex - sucking blood, forbidden, taboo. I think they just ooze sex. Vampires are all the big themes in life in one attractive, bloodsucking package.
Nature never makes any blunders, when she makes a fool she means it.
Find out who you are and be that person. That's what your soul was put on this Earth to be. Find that truth, live that truth and everything else will come.