I believe as many of us follow science closely - that until it can all be explained we will doubt in either direction.
I've had some odd experiences.
Is it the mind playing tricks? Could be.
Could also just be things we don't understand yet. Or can't measure.

I've seen some pretty bizarre and creepy shit. I've heard footsteps in empty hallways, voices where there were no people, and saw scratches appear on a girls face. I can understand why people would believe in ghosts. On the other hand, I know how unreliable our senses are, and that the brain when given incomplete information fills in the gaps.
While

Weird