Should Haile Gebrselassie Retire?

I've been hearing many people say that Haile should retire.  I think that they should let Haile do what he wants. The man is still a 2:08 marathoner.  Should every American retire because they can't run that fast?  Haile should no longer expect to be "The Greatest" anymore but he is still a great runner who can attract a crowd and put up results.  Who would you rather go to a race to watch, the former multiple world record holder, Olympic Gold medalist, World Champion, or another random Kenyan who is going to run the same time as Haile.  Haile is definitely not at his peak but he is still among the best distance runners in the world.  Haile, if you ever read this, run as long as your heart desires.  You have had an amazing career and still can drill anyone that I know at the marathon distance.  Keep your head up and don't listen to the haters.