I loved my career and the people I met, some of whom have become lifelong friends. The stress I don't miss at all, LOL.
DH and I have always had hobbies and spending time on them is a joy. Add in travel and new hobbies, and there isn't enough time in the day.
Totally agree with mathjak re money = options. Health is a great thing to have but plan as you will, you cannot guarantee it will last. Too many of our friends/family mistake "saving $$$" for "planning for old age". Now in early 70's and mid-60's, they're shocked at how large healthcare costs could wipe out their entire net worth.
They didn't plan for something going wrong, and now they're terrified that something might. What we've seen is that people get knocked down not by just one or two bad things happening, but by multiple bad luck within a short period of time, wiping out their social/financial resources. They hadn't planned on 3 or 4 bad luck incidents.....but it happens.