yes i agree... old guys like me need more recovery plus i do a fair amount of cardio so that is also a point.
I think it is OK to refer to oneself as being old. Some days lately, I feel very old and I am only 68 years young. I wonder what I will feel like at 80 years of age.
I am with you on recovery, I have found that the older I get the more time my body seems to like for recovery after a workout. The good news is that once recovered, my body seems ready to go again. When last I worked out, I was working essentially one muscle group a day. I divided leg workouts to quads and calves and later in the week hams and calves. I like to hit each muscle a few different ways in each workout. For quads I really like doing reverse hack squats. After doing them for awhile, I noticed several other folks doing them too. I think I started a trend. I haven't done squats for a couple of years now, preferring to do leg presses instead. I worry about my knees and my back even though I have never hurt them doing squats.
Cardio can be very boring for me. Living in a rainy climate, I tend to do cardio indoors much of the time. This rather limits the array of activities to the more boring ones: such as, stationary bike rides, stair steppers to nowhere, treadmills which leave you right were you started, with a slightly elevated heart rate, etc. Years ago, I was more ambitious about riding my bicycle and getting soaked while doing it or running on the sidewalks and in the streets, (wrenched my knees couple of times doing this by stepping wrong off a curb). I walk my dogs off leash late at night when no one is out. They move at a pretty good pace. Sadly, I have found myself out of breath just keeping up with them while walking up our hill. These are times when I wish I walked on four legs like they do. They seem to manage the hills with ease.