You can’t disqualify someone’s opinion just because it doesn’t match yours. What’s the point of having everyone agree with you all the time? It’s no fun to be surrounded by people who only go along with everything you say. Don’t be too dogmatic in your beliefs, and be open to hearing the other side of the argument. You don’t have to change your opinions, but listening to different perspectives will only enrich you. Of course, it might frustrate you, too, but it keeps life interesting.