I have talked to quite a few people who 100 percent believe in ghosts, they believe that a person's soul stays behind after they die because it has not finished something and wants to stay.
If I sit and think about the existence of ghosts and the possibility of life after death I come up with horrifying ideas and other possibilities that seem so absurd to me that I cannot put a belief like that toward the supernatural.
Imagine if you died, as in today, and after you died a piece of you that was aware of what happened stuck around to contemplate what was going on. You would be invisible and nobody would know you were still around, you could see and hear everything but unable to interact with anybody. You might be able to knock over a book or send a chill down someone's spine but that would be about it.
Think about what a lonely and terrible existence that would be, no one to talk to, never sleeping, never eating, nothing to do ever except roam around viewing other peoples situations with no possible way of helping. That sounds like it would be hell, and you'd get to do it for all eternity.
Even if someone noticed you, say like a ghost hunter, or scientist of some sort, they would be more interested that they actually found a ghost instead of trying to understand why you were there in the first place.
I will not believe that of all the people I have loved and lost, some of them might be out there floating around endlessly and lonely for all of eternity. I am sure that when you die there will always be some sort of unfinished business left behind, I believe this statement is true for everyone. If you end up leaving this world, I hope it's done in the most peaceful way possible and you have not left a piece of yourself behind.
Scott Goerz