Preconceptions exist cause LDS and it's members have been notoriously silent when asked these sorts of questions in the past. That's why, but the same can be said by a lot of orthodox denominations in Christianity.
Your indignation towards the questions asked of you is noted, and doesn't do you any credit nor does it answer the questions others have. But I'm sure, you'll be indignant when pointed out this fact as well. but nothing like a vicious circle right?
I'd be more impressed with your willingness to discuss your religion if you:
A) Answered the questions asked and discarded the silly questions like the sun and moon one raised. I do know that was a trap question, but I would remind the one that brought it up, our own orthodox understanding of science and the moon and the sun at the time of Young was just as misleading.
B) Dealt with the issues in truth as far as your knowledge on the subject is. And if you ran into issues you cannot answer, it's perfectly fine to say I don't know.
C) Show a willingness to engage in debate rather move back into a position of defence. It's a tempting and comforting idea, we all seem to be apologist for our versions of the faith at one time or another, but pulling back like you have only shows a unwillingness to stand for the principles of your faith.
So, shall we try directing the question at hand back towards the OP or are you unwilling to deal in my three points?