Chemistry! I hated it and still do. I know there are a lot of fascinating topics. But I think the real reason for me to dislike the subject was that my teacher wasn't so good at selling it to me. The man really lacked the motivation for his subject. He could never fire up my curiosity about things' chemistry and I too never tried to do it on my own. What I hated the most was the inorganic chemistry, all that fuss about carbon and its bonds ehhh... it really went above my head. Maybe, if I had a teacher like Walter White from Breaking Bad I would've learned a thing or two. lol...