I think it's important to seek out and read opinions that you don't agree with. It helps remind you why you believe what you believe, and it keeps your critical thinking skills sharp. I'll be the first to admit though that it is kind of difficult to do without seriously annoying yourself.
I think I've found a solution though. I've found myself reading a few conservative sources, at the recommendation of some people that I know. If you really want to have a good time with conservative readings, I've found it's best to imagine them writing about the Revolutionary War.
I'm not sure where I came across the idea, but I definitely read something about the ongoing protests here in the U.S. and thought you could pretty much copy and paste the ideas directly into the 18th century. The most amusing part is that rather than being the patriots that the conservatives imagine themselves to be, it pretty much turns them into loyalists. Quite ironic.
Keep reading, everyone!