It's all in what you choose to believe in. Some believe and some do not. I have been ghost hunting for over 15 years and I have some pretty solid evidence in photos and especially videos on my Kinect camera where they appear as stick figures. I've been touched, scratched before and I have yet to encounter something evil. I try to debunk something before I say it is paranormal. But with all the evidence I have there are still going to be those who will say it is not real. More power to them if that is what they choose to believe. If they have not experienced any kind of proof they probably will not believe.
so tell me from your 15 years of experience and proofs you can verify, do you buy the Scientific explanation of what is happening by energy being trapped, by misplacement of natural occurrences somehow stuck between dimensions and sort, or do you buy these are actual entities and Spirits of either good or bad nature that is believed from the viewpoint of God?