I see it as some kind of mental training, puzzle or fun game. Find and engage in an opposing view, no matter the topic. Of course, do that without being negative, sarcastic but positive and solution oriented. Try to expand the space of options and opinions. And for extremist left/right politics, push it that far until nothing makes sense anymore, while confusing the author. And sometimes I learn something new from it. I think this does not work if you think you can't be wrong. I'm wrong all the time and I accept it without hurting my ego.