It’s easy to share your opinion on something truly subjective like music, food, or art without being hostile. That band, that food, and that style of art doesn’t suck — they’re just not for you. And of course we all have the right to have preferences. Sometimes people with strong preferences or beliefs share them as if they were truths.
When you share opinions, make it obvious that they are your preferences, your views, your thoughts, and not objective facts about which people can either agree or be wrong/stupid. That’s a recipe for bickering and dividing people. I hope we can all agree that there’s enough of that.