I was exposed to a lot of movies as a kid, where someone "loses their faith" in Santa, only to have it restored in the film's climax. I thought on it, and it occurred to me that Santa may not be real, and the movies are based on a normal part of growing up (and then tossing the whole "let go of childhood beliefs' thing over the side of the sleigh). I think I was 10 or 11, at the time.