Why didn’t anyone tell me…

Brisingr, or why the heck after 3 books does the hero still annoy me? I went back and dread the first two books because I couldn’t pick the fine details from memory, and that was annoying. But I do have this to report, the book gets better around the two-thirds point.
I also think I figured out why it annoys me so. The hero acts and talks like a ten year old. I realized this while having dinner with friends who happen to have a ten year old. Then it clicked. Eragon is stuck in prepubescence. It didn’t make reading it much better.