I believe in lost souls wandering the earth, for many reasons.
I've had a few experiences (we actually believe there is a shadow person in our current home) but I'll share that if this gets enough responses.
Most Helpful Guy
I've had many. But I believe in the principle of 'you create your own reality'. If you believe in it, you'll see it, or find evidence for it. Then again, as I say, I've had experiences that can't be readily explained. But I don't talk about them, because there is no point. You either get the overly credulous, believe whatever I tell them; or the so called rational Dawkinites and the scientific and medical establishment, who basically think you're insane. Each had their prejudice before hand.1
Most Helpful Girl
I believe in ghosts/spirits for many reasons.
1. My grandparent's house is haunted. My mom has told us stories about her growing up there and the strange things that happened. Like her dog refusing to go upstairs sometimes and would just stand at the base and growl up them. And her seeing a person's shadow in her doorway when no one was there. And someone sitting on her during the night. The only bad thing she experienced was heavy breathing in her face one day, which she quickly left the house after that one.
My youngest sister also heard the heavy breathing. She refused to use the bathroom alone for weeks after.
My other sister and I believe we've seen it when we were younger.
And finally, my town is big on all things ghosts and hauntings. A lot of people died here. There's also probably at least 6 ghost hunting shops in town.1