My husband, now 68, retired" 6 years ago. He started working at 14, put in 3 years of military service (1 yr.Vietnam) + 37 years at the US Post Office. 
After 6 months, he started driving school bus and found a summer job driving a courtesy van full-time with the tourism industry. He enjoys both jobs, but he isn't doing it for fun, it's out of necessity. 
I am on SS disability, unable to work since 2006. My 401 K "disappeared" during the recession and during that time, I was bedridden for 7 years.
In 2002 we downsized from a larger home to a much smaller one after the kids were gone. We bought a used car, no vacations just the occasional trip South for medical or to attend a family funeral.  
2 yrs. ago, turned our furnance off and rely on a wood stove and a space heater to keep us warm. We don't eat out unless we have been invited to dinner. We rely on our son in-laws to hunt and fish for us. 
Never envisioned a time when we stopped working, our parents never did, so why would we?