>that in your 20's and early 30's you have nothing but time 20's and 30's are where lots of people have time pulled away by kids, not later (median in 2020 was

>that in your 20's and early 30's you have nothing but time 20's and 30's are where lots of people have time pulled away by kids, not later (median in 2020 was around 28 for kids). And in your 50's and 60's people generally have lots more time as kids move out (28+20=48 = kids gone or at least not such a time sink). If anything, 50's and 60's should be a golden age of learning.