I don't necessarily believe in ghosts but I can't say for sure they don't exist.
I have had weird things happen to me.
I remember watching ghost stories once at my mother's house and thinking why doesn't this happen to me. The next morning I was suppose to be up around 4:30-5 to go to work. Work called(it was passed 6). I looked at my alarm(which I did set). It was turned off and the cord was in front of a paper bag I had there which meant it was picked up(alarm clock). Since I was in the bed if I would have picked it up(or grabbed it) from the bed, the bag would have been knocked over.
I then made a comment, 'thanks ghosts'. Suddenly the curtain(behind the bed) shock for about 3 seconds then stopped.
Haha that's creepy