Nothing wrong wioth retiring at 80, my dad did it on his 80th birthday.
My wife is still working at 74 and i’m going to go back to work as soon as I get my hip replaced.
More power and freedom to the ones who can and want to. A lot depends on the nature of the job. Some jobs are killers that prematurely age people. Working those jobs beyond a certain age is a sure death sentence and often the older worker is physically unable to be productive in that sort of work.