To those of you who claim ghosts are real, why do they only show themselves to those that believe?

they dont. just when things happen the people that believe in them classify it as paranormal and people that dont classify it as a thing that just happened. Such as a shadow, people that believe say omg its a ghost, people that dont say oh its my shadow with the lighting. and with voices, the people that believe say its a ghost, people that dont believe say oh its in my head. As for unexplainable things such as full aperitions, not everyone sees them. Ghost may or may not exist, its just the fact that if you believe in them or not that make thems real or a myth.