Opinion is not taste generally. generally you have a reason you do or don't like something. You may not not some foods because your taste buds don't accept them, but with music, art, movies, books, looks, attraction, politics, there is generally something substantive you can say that makes you not like something unless you are a shallow person.
If you think I said you were shallow I wasn't using in that exact context, but OK I see your point--Sure, I was using the word to irk you. I was talking about discussion and "taste".
Sometimes it's nice to have conversations that go deeper than "I liked that" or "I didn't like that".