Book v Movie (reprint)

(This is one in a series of blogs on frequently asked question that I posted on MySpace when I began that blog. I’m guessing most of my visitors to this site have not seen them.)
I get a lot of questions about this one.
Q: What did I think of the movie version of Pay It Forward?
A: I thought the book was better. Then again, I would, wouldn’t I?
When I say that, just about everybody says the same thing: "Oh, the book is always better than the movie." Which leads me to wonder why, as a society in general, we see so many movies and read so few books. But that’s another rant for another blog.
I have theories as to why the book is always better.