Looks like Indigital is hedging their bets where Alisha4u seems convinced that the paranormal is evil.
Firstly, the occult and paranormal are the same, while ghosts fall within both or either.
Yes I do believe. I have had experiences that fall within the scope of the paranormal. There are far too many people who have had paranormal experiences that I believe are telling the truth simply because they stand to lose more than they stand to gain by lying.
Whilst it's true that we can experience things because we want to and wind up convincing ourselves that things that weren't real happened when in fact they were imagined, but it's difficult to explain how many people who have never never met, can have similar paranormal experiences at different times and without being told of each other's experiences.
Generally speaking, ghosts are benign, though sometimes that's not the case and there have been a number of documented occurrences of people being hounded and tormented by 'entities' that can only be ghosts or poltergeists.
Of course there are those for whom no amount of evidence is enough and it's true, ghosts don't normally appear to order, thereby making it virtually impossible to document in a manner that satisfies all the criteria necessary, but it doesn't mean they don't exist.