Recently I was thinking about the worst classes I ever had to take during my schooling, which encompassed age 3 to age 25. On deep reflection, these are the five worst classes I've ever taken:
1) Med school Biochemistry: I actually didn't hate all of biochem, but there were portions of it that I hated with my very soul. Like metabolism. I really don't like memorizing pointless stuff and metabolism was the epitome of that.
2) History: I guess I should be more specific and say something like "AP American History" (and I could, because I really did hate AP American History), but I can't really remember any history classes I ever took that I didn't hate. I find history boring, and if that means I'm doomed to repeat it, then so be it. The best semester of high school was when instead of history, I got to take economics. And in college, I avoided it entirely. But you know what? Despite hating history, I'm glad I was forced to take it. Because if I hadn't, I never would have learned that stuff on my own, and knowing, for example, that Benjamin Franklin wasn't ever a President is the kind of stuff that occasionally makes you sound intelligent.
3) Alexander the Great: When I was in college, I had to take a class about Alexander the Great. No, that would have been too broad... it was actually about the art depicting Alexander the Great. I never knew what the hell to write about for the essays, and the final exam involved memorizing 200 slides. It was the kind of thing that I forced my brain to do, knowing it would expel the information an hour after the final. Except then the final got interrupted by a homeless guy who claimed he had a bomb and was going to kill us all. This actually happened.
4) High school biology: I know you're thinking, how could someone who hated biology so much end up going to med school? That sounds like a mistake. And you'd be right. Granted, I hated the plant biology most of all and I didn't become a botanist. I think part of the issue was that I was trying too hard, so I'd spend like two hours on the homework every night, and my only reward would be a check plus. And then I bombed my biology project because I refused to bring fruit flies home with me over spring break. Actually, the only science class that I enjoyed through all of high school and college was chemistry.
5) Expository writing in college: I was forced to take this class during the first semester of college. We were supposed to write essays about short stories, and despite the fact that I liked the short stories, I discovered that I really, really suck at expository writing. It was a rude awakening, especially after high school, when all you need to do to write a good essay is read the book and have good grammar.
Honorable mention goes to physiology, immunology, pulmonary... well, half of med school, basically.
Classes I liked: MATH
I also liked high school level English, Art (drawing not art history), and computer science. How does that equal "doctor"?