I hold a firm stance on the subject of ghosts, one where I completely think they exist. I've had experiences, ones that now give me goosebumps and just downright give me chills whenever I am in my house alone because I know there is at least one ghost that frequents my house (or at least frequented, haven't seen or heard anything out of the ordinary, but I live here about a third of the year now.. and it wasn't daily when I did see/hear things).
i've seen shadows out of the corner of my eye, heard random noises (which coupled with the frequent creaking of the old wood in this nearly 80 year old house doesn't exactly help the imagination, I understand that much), and even heard my name called in a very unfamiliar voice (coupled with the fact that it came from the direction of my parents bedroom, the master bedroom, and the family was downstairs while I was in the bathroom. The sound was very easy to locate). The most unnerving experience, was when I was playing with our mini-vhs video camera, and it picked up 'interference' (was watching the flip-out lcd display). I was just kind of spinning in a circle in my parents bedroom, and the first time I directed it at the one corner, it picked up interference that did not fill the whole frame, but rather, just a portion (say, an oval shape, for easy reference) of the frame. But it stayed stationary, so as I passed, it moved across the frame. But the next time I pointed the camera to the corner, it wasn't there, but rather as I continued to move around the room, it was in another spot. That creeped me out and I turned the camera off. btw, it wasn't recording, of course... had no tape in it. To this day, I wish I did... but either it wouldn't have recorded that interference, it would have been heralded by critics and nonbelievers as merely interference, or it would have been described as faked. You can't win against the nonbelievers.
btw, I refuse to believe in religion or any deity in general. Firmly atheist, nor do I believe in any sort of 'afterlife' or heaven or hell. But, due to the whole unknown part of science, I don't really know how to approach the idea of what the hell happens when we die. I think everything about our behavior and everything is very much simply controlled by what has been bred in us and is merely a collection of nerve endings grouped in certain patterns. However, it is so hard to believe that we just 'turn off' when we die, especially due to the fact that I believe in ghosts. I believe ghosts can be 'evil' due to the same facts that humans can be 'evil' in our present life, and it has nothing to do with demons. However, people seeing weird shapes and whatnot brings up the question of, was it truly experienced or hallucinated. So many questions, so very little understanding.
I am confused myself, as I believe in ghosts, but don't really think there is even a possibility of your 'soul' or personality living on after death, as everything we are and know is contained in our body, a collection cells working together.. nothing magical at all.
however, I am also able to comfortably avoid that realization by bringing into the equation parallel universes or something of that nature.

I honestly believe such a thing could very much exist, maybe it's a way to explain dark matter. Hell, now I'm simply talking out of my ass as I attempt to piece together and type down how I think about things. But, who knows, maybe ghosts are merely how we see the living things of a parallel universe, so maybe weird 'creatures' that anybody might see are simply normal, living creatures (that look like how people see them here, just... alive, and not here). Is this making any sense to anyone? lol
now, this might not explain why people can have personal ties to some paranormal experiences, or why they sometimes are so convenient with the history of certain locations... maybe the souls (i hate that, i don't believe in souls at all, but am still spouting off as if they are something material) pass over to the parallel universe and are reborn their? i dunno. now I am completely bullshitting. hmm, time to draft up a new religion and write a book about it! Surely I can make some personality tests and get a church established somewhere for this new religion!