Emmitt is an all-time great. I think it's riduculous for people to tell him he hung around too long or whatever.
One thing I remember Jerry Rice saying a few years ago that Football isn't a sport like say, basketball - where you can go to the park and play a pickup game anytime you want, or just go in your backyard and shoot basket after basket. Once you retire from Football, you're done, you can't find 22 guys, throw on some pads and go to the park to play.