Being Told That My Opinion Is Wrong

Someone asked what my favorite band was, and I told them it was Paramore. “Paramore sucks! I hate them so much! I can’t believe you listen to that crap! I listen to My Chemical Romance.” So what I like is wrong and I’m supposed to just follow what you do? Opinions are biased points of views. No opinion is right or wrong. I don’t understand why everything I do is called “stupid.”