They want a man who has navigated the stormy seas of the world, who has just a little bit of history, and has overcome the dating centers worldly culture, a man who has discovered for himself where peace and happiness lie. That said, Mormons have learned to have fun without alcohol and often have to wait until drinkers are well-oiled and loosened up to join in the dopey-ness.
Yes; I suppose if each of us believe the other is brainwashed, there's going to be major problems later on.
Mormonism isn't a free ticket to heaven. Yes, anyone crazy enough to believe the story of gold plates should be able to rationalize a brown rock.