I don't believe I've said this before, so I will now. I have to give LOTR credit for giving me the interest in Tolkien and fantasy to begin with. If I started out with COH, I would have abandoned the whole genre. The first time I read Turin's story in The Sil I thought I'm going to be sick with all his mess, and I put off reading COH for a long time. After a while, though, COH started winning over. It is a more "specific" book in terms of its themes and characters, which is probably the reason that it draws a smaller audience, but it's a "louder" book. If I decided to reread some Tolkien and I was given a choice between LOTR and COH, the latter would win hands down.
Once again, though, I have to give LOTR all the credit for bringing me to COH and the rest to begin with. And I guess I am too much a pro-tragedy-book person to deny a good tragedy.