The concept of 'retirement', of enjoying decades of work-free leisure in your golden years, is a relatively new construct. It's only been around for a few generations.
In fact, the current version of the relaxed, golfing/RV-touring/country club retirement lifestyle only came into being in the post-WW2 boom era — as Social Security, corporate & government pensions, cheap and plentiful energy, and extended lifespans made it possible for the masses.
But increasingly, it looks like the dream of retiring is fast falling out of reach for many of today's Baby Boomers. Most will outlive their savings (if they have any at all).