Think about if you were the player - Would you want your career to be ended by being fired, or would you want to be able to make the decision of when you want to leave the sport on your own?Also, in response to your statement, look at some of the players that are stars today. Do you think that their skills will trickle down to almost nothing by the time they are 40? No, of course not! They will still be good, if not great, players in the league. We'll need a retiring system to control the amount of old players playing in the BB system.