What's also notable about THE LORD OF THE RINGS is, for a book as long as it is, many of its readers reread the novel many times over. Yet despite its enduring popularity, Tolkien is often held in complete disregard by the literary establishment.
The real question is why? In the literary climate that is characterized by modernism and post-modernism where the twentieth and twenty first century is a wasteland why does a "series" of fantasy novels become one of the most beloved works in modern times?
It's because the power of myth over the human imagination works wonders, creating a longing and a hunger that, Tolkien argues, is met by the Christian religion. Tolkien and C. S. Lewis are the flip-sides of the same coin, with Lewis giving us accounts of the longing and Tolkien providing the books that would create that longing. And what about the longing? It's that longing for Myth, that love for those beauties which Tolkien shows us in THE LORD OF THE RINGS. It's that longing that sets man apart from all other creatures in the universe: a craving for beauty and for joy. The German word for this longing is "senhsucht". In a time characterized by fast-food, cell-phones, materialism, superficiality, the account of a Hobbit working against all odds in a mythic landscape so captures the human imagination (and this is NOT hype) that an entire genre is created. It is because of how Tolkien so masterfully handles Myth that he has been so highly treasured by such a large fan base.
Joseph Pearce - Tolkien: Man and Myth, Ignatius (1999)
The Eden “myth” was at the very heart of Tolkien's creation of The Silmarillion, as well as being at the very heart of the Creation myth contained within it. Tolkien's longing for this lost Eden and his mystical glimpses of it, inspired and motivated by his sense of “exile” from the fullness of truth, was the source of his creativity. At the core of The Silmarillion, indeed at the core of all his work, was a hunger for the truth that transcends mere facts: the infinite and eternal Reality which was beyond the finite and temporal perception of humanity.
Review of The Lord of the Rings – Amazon.com