Today the average duration of human life in the United States is just about 70 years for women and a little less for men. Conservative experts believe that man is really build to last about 100 years; and that medial advances and more healthful living habits could bring this about within a generation or two.
What good is it to add years to life if we do not also add life to years? In fact, unless people learn to enjoy life and to grow old gracefully, the extra years may be…