Griffey is THE reason I am a baseball fan today. His once in a generation talent level will surely be missed. But what will be missed most of all is his genuine persona which enabled him to be a positive role model in an era which desperately needed them. There was a point where the entire game a baseball was in Griffey's shadow, which is something that cannot be claimed by many men.
I fear he will take this opportunity to hide from the spotlight for a long time after spending basically his whole life under a microscope. Baseball is a better sport with Griffey involved in it, and I hope he takes this opportunity to continue being an ambassador of the game throughout the rest of his life, but I can certainly understand if he feels he has done enough for the sport and decides to take a different approach.
Whatever you decide Griffey, you will always have a soft spot in the heart of millions of fans just like me who grew up idolizing you. Good luck in the future.