I'll go first. Mine is that I can't stand the Deadpool movies. They are self aware and self referential to an obnoxious degree. It's like being continually reminded that I am in a movie. I swear the success of that movie has directly lead to every blockbuster having to have a joke every 30 seconds
Demand avoidance is a thing, I specifically hate it when people are all “BRO, how have you not seen this, it’s the shit. YOU DONT KNOW WHAT YOURE MISSING!” So I just stay away as a fuck you I guess.
I find the people who do the whole "how have you not seen [...]" Have not matured enough too have the awareness that other people have different life experiences. Lack of empathy.
Things are popular for reasons and being cynical about it and prejudging something based only on its popularity is limiting your exposure to the world.
Its better to have an informed opinion then a cynical ignorance.