I too dislike The Scarlet Letter, but not too horribly. I've read more of the least favorites than the favorites, and none of them were truly horrible, some were quite good.
Interesting. I think one metric that skews Goodreads data is that users don't have to read the book to drop a ranking. So a lot of people rank a book based off reading a chapter in class or hearing about it from a friend or watching the movie (see comments on Starship
I agree with your point as well. Most of those books are worth reading at some point. Not every book is meant for every time of your life (read Hemingway and Jack London when you're young etc.) so some of these we shouldn't make young people read. I know I didn't enjoy The Brothers Karamazov in high school but LOVE it now. I loved Gulliver's Travels and Robison Crusoe then, but probably wont read them again.