I'm a '36 model and to detour around the heavy math concerning my age, let's just say I have much of the road-of-life in my rear-view mirror. That's not a bad thing---life. In fact, IMO, the only bad thing about it would be to have lived and not learned from the experience. And I have good company in my belief:
"Those who cannot remember the past are condemned to repeat it." George Santayana 1863-1952