Your early 80s, or the 1980s? smile (Sorry, couldn't resist.)
Welcome and keep hiking. At 67 (I also began in the early 80s) I find I can't hike as far as I used to in a day, and can't handle some of the aggressive terrain I used to. I've also learned that the love of the eastern US forests is still as strong as ever, and that the hikes and the nights spent camping are just as sweet.
I'm also a huge fan of Colin Fletcher. The original Complete Walker got me started.