Of which is the most frustrating to you involving classical music....?

I don't like the song part. Some call compositions songs and I can't stand that. My favorite though is "It is so long. It is too boring" when they listen to just part a movement of a composition usually the beginning. I am not a musician but I love to listen to Classical music. I would love to learn more but is hard since I never have been a student of the composers and don't understand the musical language.