I've noticed that when I was working I did more non-work things than now. I studied martial arts, was in 5 choirs, and biked everywhere even in the worst weather. Now 3 choirs and the band are quite enough, thank you!
My 70s are much different from my 60s. Then I was still a house afire. The past week or two I wrote more than usual. Maybe it's that without all the drama there isn't so much to write about!