I don't think its the whole female heroine thing. Most of the time when you see a trailor for a horror movie you don't know what roles each person plays fully. I hate to say this but I think because our lives are generally non-violent and somewhat boring in the action scene, we go to see movies that give us an arenaline rush. That's why I go, I love the feeling they give me...that and I just love gore to a frightening extent. BTW I like FAKE violence when I say things like this, I never refer to real violence and blood ^-^