There's a persistent Mormon named Seth Rogers who is well known to atheists bloggers. Criticize the Mormon religion in an atheist blog, and Seth is right there to set you right. Three months ago I wrote a blog about the Mormon Church's immoral stance on homosexuality, and the debate is still going on.
After I wrote my final response in that thread, I realized it was blogworthy, not something that should be buried in a long tirade of Mormon apologetics, so here it is.
Mormon apologists make the classic mistake that's repeated over and over by religious apologists everywhere: they assert that the burden of proof is on the non-believer.
Mormonism makes a staggering number of amazing claims that defy both common sense and the historical and archaeological records. It is up to the Mormons to prove that there is a reasonable, plausible explanation for every one of them.
In science, no single experiment or observation proves anything. We accept theories like relativity and evolution not because of Einstein or Darwin, but because years and centuries of experiments and observations continue to support and confirm these theories.
Occasionally an experiment will seem to throw doubt on a well-established theory, but after more work these invariably help us refine and strengthen the theory.
Religious apologetics is just the opposite. The Book of Mormon is full of fantastic claims, each of which requires some sort of linguistic or historical twist. When we look at the facts, rather than a long series of wonderful discoveries that strengthen and confirm the Mormon claims, Mormon apologists have to twist and turn to slip around the facts.
Where science argues, "Look, this strengthens the theory," religion can only say, "Look, this doesn't refute the theory."
I can make any unfalsifiable claim I like, such as Russell's famous orbiting teapot, and my religion is just as good as yours.
Every single argument these Mormon apologists make falls into the "you can't prove I'm wrong" category. Every time we call them on it, they're forced to dive into linguistic smoke and mirrors. We don't have to prove Mormonism is wrong. Mormons have to prove they're right, because Mormons are the ones making the fantastic, magical claims.
Proving Mormonism wrong is uninteresting. If the Mormons find a way to prove they're right, come see us.