It also comes from arguably the best book trilogy ever as well, which is set up nicely by The Hobbit with plenty of post-LOTRcontent too. I mean Tolkien went as far as to create his own languages for the series. Not discrediting Peter Jackson in any way, because what he did with the books was incredible. That being said, the material they were able to draw from is just impeccable. This is by far my favorite trilogy of movies as well.