Something came up in conversation earlier today, where a friend mentioned that she's heard some people espouse the belief that having a religious viewpoint is literally a mental illness. I don't agree myself; sure, there are a number of crazy religious people, and I think some religions (like most sects of Christianity) should be erased from the world because their worldviews promote insanity. But religion inherently an insanity? No. Anyway, what do you think?