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
Citizen Kane and 2001: A Space Odyssey suck now.
There are old movies that have aged much better, like The Man in the White Suit and Colossus: The Forbin Project. These should be the ones we call classics.