I am empathetic, but I have much left I'd like to accomplish before I go. I ran a 5K in the mountains yesterday, ran a 5K in the flats to the gym afterwards to cool down. So what, ,,,,it's just a stupid pet trick. Maybe I have brain cancer and don't know it.

I don't think its your attitude or how active you are at a practical age, it's what you are accomplishing that has some meaning in the world. Otherwise, it's just the same self-masturbating of our 50 year old ME culture.

The only value I can place on repeated physical effort is to acquire the energy and health to do other things that have some real meaning. I know, what a bummer...