It's just fun
I don't really care about the predictability of the film; I enjoyed it. Maybe part of the reason I did was that a friend of mine, my family, and I were extras at the Charlotte Coliseum during part of the filming. Also it brings back memories of all the Charltte Hornets games we went to, not to mention concerts, etc. that we attended there. (Now it means even more since the Charlotte Coliseum was sold and demolished.) But no matter what, I think it was just made to be a feel good movie, and it is nice when the underdog wins in the end and the bad guy gets booted in the behind for his bad behavior.
"Wake up every morning as if it's on purpose."