They were among my very favourite books when I was 12.
Now, I can both appreciate Tolkien's originality and influence (for better and for worse) as well as the fact that his stuff is pretty damn shallow.
The movies, on the other hand, surgically removed pretty much everything that I liked about the books. I don't get off on epic CGI battle scenes and set-pieces.
I understand that Tolkien's love of language, poetry, local culture and custom, etc., don't translate well to film beyond the superb work of the design teams.
And I'm usually the first person to roll my eyes when someone leans back on the critical cliches of "it was different from the book".
But the omission of Tom Bombadil, the Scouring of the Shire, and the "going west" ending demonstrate that Peter Jackson really didn't know what LOTR was about. I understand that most readers see those sections as afterthoughts. But they are more important thematically than any action sequence.