I'm that way about zombies. Part of it is how I perceive myself to look, I think... always a little on the dead side, lol. Might explain my weakness for all things L, also.
That sounds like the kind of question you'll get to answer in an interview when you're a famous author. "Of the following, which makes your heart ache? Werewolves, Vampires, Zombies, or Mummies?" xD