Because most of us still scare about the things we don't even know and we don't want to know. A vampire is not hurt by the cross or garlic, even the church. They are not sons of Satan and many of them believe God. They cannot disappear if you take photo of them and also can show themselves before the mirror. If they bite you, you are still a human. Human blood for vampire is food, but vampire blood for human is drug.That's the difference between us, we always have many desires in our life.That's the Ture Blood told us.