Thank you for the advice. I've started by rereading the scientific explanations of the big bang, evolution, and basically most general scientific principles. Looking at it without constant justification going on in my mind is quite refreshing.

So far I've been able to avoid most of the arguments, though I was surprised by how genuinely sad some people were. I'm going to keep quiet about religion for a while, and figure out what other pieces of my worldview I need to take a rational, honest look at.