You do yourself a disservice by ignoring perspectives opposite of yours. You're not "correct" and neither is he, but you're looking at different facets of the same subject. Believe it or not, you can gain insights from opposing opinions. To ignore them is to stop challenging your own beliefs, which is arrogance. It doesn't mean that you accept their beliefs, only that you look deeper into the how and why of the differences between you. It's so boring to be in a group of people with similar opinions, you sit there in a circle jerk reinforcing each others bias until you're putting absolutist bumper stickers on your car and contributing money to political parties.