Physics! Uhn! What is it good for? Absolutely . . . er, quite a lot, actually.
Physics in games is one of those strange things that you don’t notice until it stops working right. Example: in older games, where physics processing was not a big deal, no matter how an enemy was shot, he fell with the same pre-canned animation. This is actually more realistic than modern games; people do not fly backwards when shot like in the movies. But the point is, the animation was not dynamic, resulting in a death animation that did not look right.