I'm astounded at the accusations of greed and selfishness from people wanting to dictate how long some one holds a position, when for most of the advocates of such a position, their motivation is wanting a vacancy in the left seat.
The only person who should have input to retirement date/age, assuming competency, is the individual.
I might have to change my goal in life. To be the first centarian airline pilot.
And another thing, most reading & posting here will live to 70+. If your < 50' then that's 20+ years away and a lot can happen in those 20 years. It may eventuate that it doesn't suit
you to retire as early as you advocate now, in the bloom of yoof.
And, Mrs C points out, the earlier us baby boomers retire, the greater tax burden on the subsequent generations.