To be honest, I find all religions ridiculous. But there are very few that we can say with 100% were made up, and
Mormonism is one of them. Scientology is another. That is why South Park makes fun of them, but not Christianity (which I also find retarded, but less retarded than Mormonism.) I don't know what makes you think that people are required to respect religions, but they aren't. And...