I'm supposed to believe in spirits of the dead, which are basically ghosts, since I'm Buddhist, but I kind of don't. I've never seen any. I'm not one of the people if my family that have ever had dreams of my dead relatives in their next lives. I have never seen any tangible evidence of ghosts, so I don't think they exist at the moment. They could, but I've seen no signs of their existence as of yet. If I ever see a ghost, I might change my mind. If I ever have a few dreams of my dead relatives, I might change my mind.

I'm not saying they don't exist at all, I'm just saying I don't believe in them for now. I don't know about other people, but I guess it depends on your religion...if you've got one at all and your past experiences. I just happen to be a bad Buddhist that hasn't seen much of life.