Second, what's wrong with childish? Like I said, it's a book for 7-15 year olds. A lot of other people just happen to read it. And the fight scenes are simply entertaining.
Padding? I'd love for every single line of text, no matter how miniscule, to be in the movie. I LOVE padding. Sadly, that's not realistic, so I'll take what I can get. As for the fireball, yeah, not so realistic, but who cares? It's a 2 minute scene.
You're right about the Tolkien thing. Yeah, it's pretty much 100% I'll go see whatever it happens to be. I think that makes me a true fan I'm really not sure what your problem with spending money on something that one finds enjoyable is however. I really don't see why it matters to you how many times I go see a movie, or how many movies I go see.
I can't argue with you about which is better, as that's just an opinion. But the Cinemascores are the same, so apparently people enjoyed The Hobbit just as much. I'm sorry you don't feel that way. In the end, it's a movie. If PJ wan't to indulge himself he's perfectly entitled to it, and if people pay for it, he's clearly doing something that people want to see.