I don't understand the obsession with being young - when the SR-71 Blackbird had its first flight, Kelly Johnson was 54 years old. I'm not old, but not that you

I don't understand the obsession with being young - when the SR-71 Blackbird had its first flight, Kelly Johnson was 54 years old. I'm not old, but not that young anymore, and from what I've seen, there's a spectrum of ability in all age groups. And pay does not exactly line up with 'Value' produced (which itself is a nebulous concept)