Amazed that so many people disliked PE! It was the highlight of my day :)
I disliked school being boring, and petty, unfair teachers. Most weren't like that, but it only takes one to a make things miserable when they are in charge.
I also particularly disliked the fact that the music teacher didn't actually teach our class singing but simply put on records instead. I loved singing and used to look forward to it all week.
And a couple of rather malignant nuns.