I think people have failed to note that this movie is based on a true story and not much of it at all has been added or changed to make it more "Hollywood." Sorry if this man's suffering wasn't entertaining enough for you. People are actually upset with Steve Carrell too, as if it's his fault.
Bottom line - Interesting mix of animation and real. Great acting for Steve. Cool story! And since it's real, you can continue to learn more after the movie!