That's definitely a trade-off. How much do you value the security versus the increased consumption possible with more money. But it is a trade-off. It's not some irrational choice that Americans made that doesn't yield a tangible upside for them.
The median person might not, but for "employment-threatening health issue" a quite big percentage of people get into them, and for life threatening ones a large enough percentage to matter (I'd say 10% or more easily, due to cancer and heart attacks alone).
https://www.commonwealthfund.org/publications/newsletter-art...
And of course the key words here are "during their working life". If we imagine that until 60-65 or so, this has been extended by people unable to get pension in a reasonable age or with savings eaten by health and such issues and forced to come back into working life.