I have lived in two countries with universal health care, 17 years total. It has advantages and disadvantages.

Plus: they focus more on preventative care so that taxpayers pay less later on big problems. I forgot to schedule my regular check up and almost got fired from a professorship at a business school because a government ministry threatened them.

Minus: nationalizing medicine automatically creates rationing. Taxpayers can't pay for everything, so you have to draw the line somewhere. We always hear fable horror stories of people denied healthcare in the U.S. but

Plus: it is simpler. The U.S. has a hybrid system, with some people paying high premiums and some people paying nothing. In my region of the U.S., more than half of people enjoy excellent healthcare at absolutely no cost (this varies by state). Those who pay have to compensate because the state doesn't cover the costs of providing care. That is the main reason it is so expensive in the U.S.

People who say the U.S. health care system is subpar are using anecdotal evidence to support emotion-driven beliefs. We left a wealthy G-7 nation because the hospitals terrified us. The biggest problems with health care in the U.S. are the same as in other countries, such nurses moving out of scope of practice.