I've been a Tolkien fan since a very young age when I would read and re-read the old copies my mother handed down to me of Hobbit and LotR. Then I went on to read the Silmarillion and all of the "unfinished" books.

Having said that, I cannot fathom why anyone would be upset about new material. The books you love are still the books you love. They haven't changed at all, and they won't. If you don't like the new stuff, ignore it, like we all do for almost all media that is released.