Pesonally, I don't believed in ghosts visits. I was raised in a culture with many superstitions, but I just don't believe in superstitions since I was a child. My parents, relatives and close friends find me a bit unusual, but I don't care.
In fact, for all my life... I haven't seen any. Even on those areas where many people reported it is haunted.
I guess, it's the great power of suggestion and subconscious mind that hunt most people to believe in ghosts.
Well, there maybe, but I just don't believe it. Perhaps, that's the number one reason why I didn't saw one