Went for a run yesterday; pulled a hamstring. That's two major injuries in as many runs and that's two too many. Time to go do something else for a while and reinvent myself.
I've won a race in the 1960's, 70's, 80's, 90's and 2000's. I've won at nearly every distance from 100 meters to 50000 meters. I've won on tracks, roads and trails. I've beaten Olympians and world record holders. More than 600 races, more than 20 wins (maybe over 30) - nothing left to prove.
Have I accomplished everything I wanted to in running? No. But I believe I've done more with what little talent I have than anyone else on the planet.
If I find something that intrigues me, I'll come out of retirement and I expect a number of people then will say, "Oh, this will be fun!" Trust me, it will be fun. Until then, see you on the sidelines.