Honestly I thought Eragon was great for a two week span of time when I was ten, I then found WoK and from their I've just been reading a lot of Sanderson. Eragon is an OK book series but I think that if you stick with reading for long enough your taste will mature. Not many people I know my age still read a lot but all of them who read any thing by Sanderson do. The stormlight archives was the first series or any book for that matter that I ever reread, almost any book next to a Sanderson book looks unattractive. Eragon was defiantly just a starter series for me but to some people it could be the most advanced book they will ever read.
Also I'm thirteen and am insulted that someone would think I would still be reading Eragon.