I personally prefer mysteries to horror more for the fact that I feel more involved in disentangling the case presented, that they pose more of an intellectual challenge. The only thing close to a horror story was when I read the short story of "the Invasion of the Body Snatchers" when I was twelve; I'd like to blame my insomnia on that although my bad habits started a few years earlier. I definitely enjoy "suspense" movies but I don't really see in the point in watching horror movies just so I can be scared. I'm terrified enough of the religious fanatic yelling "Be saved by Jesus or burn in hell for eternity!" around midnight in Harvard Square already; I could pass up on extra scariness.