Believe in Ghost?

I do not believe in ghost. I do not believe that there are life forms after death that come back to earth or even suretin places like a special house or building to haunt the people there. I think the thought of ghost are silly and unreallistic. I do not think that people can hear or even see ghost. I believe that they are just parenoid. So I do not believe in ghost and I think that they are very unreall.