[jojo2000]

And once the apocalypse is over, they can live altogether in a devastated world where money has no meaning, and where true skills are the only riches. No one to steer the yatch, no pilot for the aircraft, no petroleum.

So much money is wasted in this world.

Wait, couldn't it be used to live in a better world altogether ?

[bitwize]

Plenty of rich people can pilot their own boats and planes. It's a skill they can afford to acquire as a hobby.

[jojo2000]

A medium-sized yatch needs a crew of 6+ people. An airplane needs to be replenished in food and supplies, and be taken care of, and frequently inspected and repaired. We often forget how brittle technology is...