:: sigh :: Incidentally, our EQ meeting this last week was all about the LDS church being the one and only true church (which we get a lot of in my ward). One individual said that we have ALL the truth (literally, those were his words). It was the first time I remember anyone saying that expressly (as opposed to "fulness" or something). My first thought was "crap, I came to the wrong church this week. I thought my church believed in continuing revelation and progression. What am I doing here?"God allowed these people to suffer so that we could have a legacy of faith.
I just had one thought. I think Brian hit on it already a bit.
I try to view it as creating our own mythology. People tell stories, and in Mormonism, we use stories for the express purpose of building faith. I bet you have no problem with comic books, or hollywood movies that try to teach a lesson, or moral through a story. Since you know, and accept that they're not factual, you don't allow that detail to get in the way of your learning the lesson being conveyed. I try to apply the same idea to church. It all may be factual, or it may not, in any case, it's likely aggrandized. But it makes no difference, I just try to not allow that detail to get in the way of me learning the lesson being portrayed.
If you were Catholic and had the idea of transubstantiation preached to you, you might feel the same way. But you'd be missing some very cool symbolism and associated spiritual benefit.