To summarize and put this in context...

Educated upper-class professionals live longer than the average.

Also the average for a new-born might be 77, but the average for someone who makes it to 65 or 67 in good health (aka an airline pilot) is going to be much higher than the average for a new-born, well past 80 I'm sure.

Bear in mind that many white-collar professionals work well past 65 often closer to 80 or beyond. Right off the bat, my Dad, uncle, neighbor all still work part time, and all are 80-ish plus or minus a couple years. All are post-grad professionals. Of course some professions are harder physically than others, probably not too many 80 y/o plumbers or auto mechanics but our job isn't quite that taxing on the old bod either (we do need some mental acuity though).

Years ago it was a known thing that retired Navy CPOs would often die within three years on average... and most of them retired between age 40-50! Their officer contemporaries OTH would retire later; both groups served 20-30 years but the officers' clocks started after college. The officers would then go on to live to a ripe old age like other white collar folks. The difference was lifestyle, alcohol, and purpose... back then the enlisted folks tended to stay sober on the ship, but binge-party when ashore... upon retirement, the CPOs were ashore, so they behaved accordingly. They also tended to have an outlook that retirement involved no work, where officers tended to get a new job or even career. This was many years ago, officers typically had family but enlisted pay and benefits were not as conducive to supporting a family so they were more likely to remain professional bachelors.

Point being your life trajectory in retirement depends very much on your lifestyle choices, and I think on having a purpose which gets you off the couch. For many folks that can be travel, hobby, etc but some need to work with other folks to accomplish some task or purpose. That doesn't have to be a job per se, could be volunteer work, organized hobbies like fixing old airplanes, etc.

In the real world, there's almost no limit on working to age 70. With our profession the medical exam covers most of the sudden incapacitation risk it does increase with age though), and the sim covers most of the mental acuity. The only thing we're not really evaluated on is circadian disruption... that gets harder the older you get. Most folks probably self-select though... if it bothers them they bid avoid it or just hang it up. You could actually test for tolerance to circadian disruption readily enough by doing recurrent sim in this format for those 60+:

Classroom: 0800-1600
Break: 1600-0200
Sim: 0200-0800

Implementing that would probably get you a few extra voluntary retirements right away! You would not need to do this if you airline flying doesn't include redeye or long-haul ops.