The financial impact of this is an interesting angle to me.
Considering that many of us hope to retire (or at least not have to work a stressful job) a lot of effort goes into saving up enough money to last just ~20 years after finishing work.
I'm not sure how most of us would be able to ammass sufficient wealth to be comfortably retired even for 60 years (ie live to "just" 120-130 years of age).