spectrophobia

Ghosts scare. That's their job description. And some people like to feel that scare. I am not one of them. But I did watch horror TV shows and horror movies and enjoyed them. But left alone at some place, especially at night scared the hell out of me. I didn't move from where I sat and kept on wishing that someone may come so that I feel safe. Eventually someone did come and when I saw that someone (be it my parents, or the helper) coming, for a fraction of a second this thought crossed my mind that the person walking towards me was not real but a ghost in disguise, and that this ghost uses this disguise to reach near me and scare me efficiently.
Loneliness is said to scare humans the most. Ghost also attack/scare when a person is alone. Now a days I can survive alone, but sometimes those visions of ghosts seen on TV/movies in my childhood, or imagined by listening to stories or reading stories, pop in my mind during late lonely night, especially when I walk alone to the urinal. I used to feel, and once in a while still feel that some ghostly figure follows me, ready to attack/scare or even hurt. As a grown up, I can fight that feeling, ignore it, make it feel feeble in presence of other thoughts, but as a kid it scared me a lot.
Ghostbusters was an interesting concept, but do ghosts really exist? Or are those stories about Peepal tree and eerie noises at night merely one's fear due to guilt and ignorance?
Somebody I was talking to said that being scared during day when alone makes more sense because during day one can see everything around us. What do you think?!