Personally, as I may have stated elsewhere, I kind of like the 'religion' as inferred from LOTR and the Sil.
And note that the small 'hobbit' people that were found have a biological explanation. Something to do with
minimizing energy output and lack of space.
Anyway, regarding Tolkien becoming a religion, I would say that it is possible though probably not going to happen. However, I've seen the beginnings of another
religion based on pop art, and so cannot rule out the possibility.
Ever been to Graceland? For those of you unfamiliar with the name, it is the former home of
Elvis Presley. I visited the place once, as also once I'd gone to a Star Trek convention, as I just wanted to be able to gauge how nuts I was. (note that I 'liked' Elvis, but when I found out that my old boss absolutely hated Elvis, I went in to 'love' mode just to be ornery

).
And I thought that I was a geek until I went to the Star Trek convention...
Anyway, what struck me when visiting Graceland was not the gaudiness of the place, but that I was in the presence of some true believers, and so I put my satire back in my pocket and was careful about what I said and did for fear of being assaulted. One person actually cried when viewing Elvis' gravestone, while another left a paper note on the same. Every inch of the wall that surrounds the place is etched with a message. This includes the sidewalk and public phone booth.
Have read that people have gotten married in the name of
Elvis.
Who knows what it will all look like 100/1000 years from now...