Are ghosts real?

Do you think that ghosts are real? I mean this question is still a worldwide question that is not figured yet. But, many people have experiences that they have seen a ghost. So, are ghosts are real, or is it only our human imagination? I believe that there could be ghosts but I don’t believe it. But in places like the USA (United States of America), there are places that people call that it is haunted. Many places around the world are haunted. In South Korea we also have many. So, I believe that there are no ghosts because they are unreal. I think that it doesn’t make sense. I think that it doesn’t make sense because it is just unreal. How could dead people be living in the living person’s land? Nobody knows what happens to our body when we die, so on the other side of my brain, I think ghosts could be possible. But anyway, why do we need to be scared of ghosts that we can’t see and go through doors? I mean if there is nobody in your house and suddenly the light comes out it could be scary. There is not much information found out in this area. But, just in case, be careful of ghosts!!