I love how people mistake detail for depth...ditto regarding the LoTR and that ilk...Depth isn't necessarily just lots of little pointless details about the characters lives, it's also about the accurate and understandable conveyance of emotion or motivation..."Oh this book has so much more depth than the film becasue we knew what he ate for breakfast every morning and how many rabbtits he had when he was 7"..The Godfather book for example, isn't very well written so, to me at any rate, there's very little character resonance for me, and therefore to an extent, depth. I didn't warm or connect with the characters because they weren't very well represented ..whereas the films are so very well acted that it's given more profundity, which is unusual becuase usually books have the advantage in that regard, what with getting to describe something films can often only convey with a look (although to be fair I just imagined them all as their film counterparts anyway when i read it, which I couldn't really help)
Most of Tolkien's work is the ramblings of a mad man with some bizarre form of anal OCD that manifests itself in writing endless scripture about every minute details in the lives of fictional, otherworldly magic people...That Jackson managed to whittle it down to 10 hours is a god send