Well, I also read Terry Pratchett and Agatha Christie, and I figured that Horrible Histories and Diana Wynne Jones were more eligible for scathing comments.
I read a couple of Animorphs books when I was twelve or so, but the main things that put me off were the covers - well, basically the entire design of the books reminded me of Goosebumps and stuff like that. You know, short, poorly-written novels published in their millions and probably written by a syndicate.
I apologise if they're better than I though they were