I've never had any experiences myself but I definitely believe that there are some things out there. Anything paranormal scares me, so if anything has happened to me I've probably just turned a blind eye to it.
I don't believe in ghosts but I do believe in a afterlife when you die. Demons and demonic influences are all around us remember Satan was the master of trickery and deceiving.
I do believe in ghosts after I knew my granda (after a few days she passed away) visited me late at night. I could feel it, next morning my mom could feel it too (that she was there, my grandma). I wondered if it happenend to her as well, and she said yes. So yes, I do believe in ghosts. But this hasn't happen anymore, but still, I do know ghosts and stuff exist.