Because I'm calling it quits.

I might even retire here.

I now lay down the command of my legions... and retire to private life.

I had one last duty to perform before I resigned from the human race.

They seem to confirm the wisdom of a Chinese student who recently described her life plan to an American magazine I will start with a good American university to beef up my education, then I will work in China and become rich, and then I will retire in Europe and enjoy life.

We need to elongate the time frame upon which we judge the balance in our life, but we need to elongate it without falling into the trap of the I'll have a life when I retire, when my kids have left home, when my wife has divorced me, my health is failing, I've got no mates or interests left.