Something startling happened to me when I turned age 44:
I was drafted into the US Army at age 20 and separated from the Army at age 22. I suddenly realized that if I was 1 day old the day after I got out, I could've done the whole deal again - Grade school; Junior High; High School; 2 years of college AND the whole Army thing again.
When I hit age 66, three times over! That was 7 years ago. LOL!
