How does a nation support this kind of tax? And yes, I mean tax because it's essentially an unavoidable redistribution of wealth (where not paying means death penalty) from the poor and sick to the rich. The worst kind of tax. I don't see how that is worse than getting "robbed" of your well earned money to pay for far cheaper universal healthcare.

What's the chance you're going to get one (or several) expensive surgeries done on you in your lifetime? (Where expensive is something as simple as an appendectomy.) Close to 100%? Now add regular medical expenses.

As a total outsider to US economic status: what's the median wage in the US and how expensive is private healthcare compared to it? Also: can you get kicked out of medical insurance if you're deemed too costly for their business?

Yes, I understand the US is probably the best place in the world to get the best medical care... if you can afford it.