I was very young the first time I watched THE EXORCIST. I am not quite sure how young I was but it was not more than 9 or 10 years old. Maybe not the best choice of film for someone of that age but that is an entirely different discussion. It was the very first horror movie I can recall viewing.
THE EXORCIST had a profound affect on me. I grew up going to church so just the basic premise of the movie gave me a chill. After I saw THE EXORCIST I was terrified of the prospect of being possessed by the devil. When I went to bed the closet door absolutely had to be closed; even then I would lay facing the door so I could notice if the door started to open during the night. I would also cover up my head and leave a small hole allowing me to see that closet. For me, the young me anyway, THE EXORCIST will always be the scariest movie ever made.
I have never watched THE EXORCIST as an adult. I am not worried about being scared all over again. No, not at all. I am concerned that I might just find it boring or not worthy of the fear my young mind associated with the film. There are times that nostalgia is better left untainted.