Vampires obviously don't exist. Well, that's a bit strong but the existence of vampires is illogical and highly improbable. It's just old folklore from a couple hundred years ago. In this modern age, you have to be gullibe or stupid to think they exist. The belief that vampires exist have probably increased in the last coupl of years because of films and tv shows like twilight and true blood(is that what it's called?) which sho vampires and other mythical creatures living and remaining undetected in a modern and 'normal' society.