In my case, I lived in a very small town and had read through the kids' section of the library by the time I was 8, then went into the teens and adults section. I read some things that were way, way over my head, so in a lot of cases I could say that I enjoyed it but I wouldn't recommend it if more age-appropriate books were available. And my nephew is a very sensitive kid (just like his dad, my brother!) so I'm quite glad there's so many more books appropriate to his age around now.