I do agree with what everyone has said so far in this thread but I also don't think that you can summarily dismiss this discussion.
I look at an Edgerrin James this year for example. Indications out of camp so far is that he actually looks back to the form that made him the sensation that he was prior to his injury. I'm sure some of that is simply due to the fact that time and effort on his part have both helped to heal his knee but how much more incentive does he have this year to go out and perform at the highest level? When a dog is backed in a corner and threatened, isn't that when it is most dangerous? In essence, Edge after the injury has had this looming cloud of question about his ability, what better way to shatter that myth than to focus as much energy and effort into proving any doubter wrong and coming up huge. In essence, he's going to be doubly rewarded not only by putting the nay-sayers in their places but he's also going to score financially.
I like simple pleasures, like butter in my ass, lollipops in my mouth. That's just me.