In socialist countries we have understood that it is better for the individual that everyone pays a share of what it costs to maintain a functioning healthcare system, and making it available to everyone for free.
In capitalist countries, we do the same thing, except we allow people to choose whether to participate or not. (In theory, at least. The health insurance system in America is currently broken, for many reasons. A deep discussion of those reasons would almost immediately dive into ideological dispute, so I don't intend to do so.)
Actually, I do want to mention one of those reasons, which I hope won't trigger any arguments. (Though if they do, I don't intend to engage). I mention this because I think it's interesting.
A friend of mine is an emergency room doctor in a major US state. He mentioned to me once what he pays in malpractice insurance, and it was more than my annual salary as a programmer at the time (it was around 2010, and I've gotten a few raises since then). A LOT of the cost of healthcare in America is disappearing into the pockets of lawyers, more than most people realize.
