Ghosts are definitely real. I’ve had enough of my own spiritual experiences to know that to be true, starting at age 16 and no, it was not a poltergeist. It was my grandmother’s spirit coming to comfort me like she always did when she was alive. It was not scary at all.
Other experiences have not been as comforting as that first one but I’m still not afraid. I believe there are lots of wonders in this world we can not see. Just because you can’t see it, doesn’t mean it’s not out there.