Thankfully, we don’t have to rely on your understanding of literature to determine a work’s “worthiness”. LoTR has inspired numerous imitations, sold over 80,000,000 copies around the world in something like 30 languages, and has been the subject of numerous theses, dissertations, songs, at least one symphony, and many books of literary criticism.
LoTR single-handedly changed the face of fantastic literature, and set the tone and setting for countless other books. One example is the description and use of elves. Prior to Tolkien, elves were the same thing a fairies or sprites -- small, tinkling, drink-dewdrops-from-rose petals sort of things. Check out some Victorian fairy tales for comparison. The one I'm thinking of, though not precisely considered a fairy tale, is the original Raggedy Ann book by Johnny Gruelle. The fairies bring Marcella’s new baby brother. It's very cute. Post Tolkien, elves are human sized, immortal, and terrible. Tolkien also invented Hobbits and Orcs. He may not have done so out of whole cloth -- but it was his contribution to the collective imagination to synthesize the various influences in just that way.
What does it have to say? In a nutshell? The book immortalizes a great synthesis of Norse heroism and Biblical morality. It carries moral messages promoting loyalty, determination, and the importance of striving against evil. It impresses upon us that that there are some laws so fundamental that we would willingly die rather than violate them.
:m: Peace.