When I was younger I did. But a young mind is a creative mind. Years later I started to study how minds work. A persons subconscious can do some wild things, even make people see stuff that isnt there, distort noises and so on.
Everything that comes on TV is for entertainment, news is entertainment, reality tv is for entertainment etc... Everything is setup to bring in more audience, ghost shows are all setup.
In short:
Ghosts are not real. Like said before, I dont believe in the tooth fairy, easter bunny, or santa clause and defiantly do not believe in ghosts or imaginary friends.