Excluding the obvious ones such as politics, what topics can't you stand listening to people talk about?
For me it's detailed describtions about people's dreams.
Not only doesn't your story make any sense, but you're also telling me about something that didn't even happen. It's kind of like telling about an event, and then ending the story by saying you just made it all up, except with dreams you begin by telling it's all made up. I'm already not interested before you even started.
Stuff that's entirely subjective, like their enjoyment of TV shows, movies, how they feel about religion, etc.
I get that these things mean a lot to the speaker, but its just a statement I can either agree with or disagree with. I can't really have a conversation, since it's personal preference.
That's rough. My heart goes out to you on that one. If you don't mind me asking, what is it about for example a movie that you have trouble conversing? Is is a lack of caring about the movie itself so it is along the lines of you can say you liked it or not but were not invested enough to talk about plot points or which actors did well?
I try these days to just think of the characters and see if they had a purpose of being there, and if they did, what that purpose was to see if maybe it could have been better represented. All of which is opinionated as you said, it isn't facts so I am never right, but at least I get to imagine a slightly different version in my head for a second that might give me a chuckle.
I didn't see Star Wars until I was in my twenties. It isn't a great set of movies. A lot of people really like it. And now power to them! But it's not a great conversational gambit.