At some level we know a government can not buy us everything we want.
We don't expect Government to get the crabgrass out of our lawns, We do expect the government to keep us realistically safe from threats.
With this in mind, no government on earth has "free" anything. It is all paid for at some level. So the myth of "Free" healthcare in other countries is just that, a myth.
Healthcare in other countries is provided by the government in the same way our military, roads, bridges, fire, police, courts, etc. are provided.
Lets set aside for a moment that 40 cents of every federal dollar spent is borrowed/printed just to maintain the current level of spending on what government already provides.
So the question is how much are you as an individual willing to spend on single payer?
Would you pay double the cost of everything you buy? Cars, transportation, food, utilities, etc.?
Average Europeans spend much more in taxes than Americans do to pay for single payer. Europeans seem to be mature enough to realize if you want something good, you have to pay for it yourself.
Only a 4 year old child looks up the chimney for Santa Claus, expecting free candy and toys. Which might explain partially why the United States doesn't have single payer.
Even California found a single payer healthcare system too costly and killed the legislation.
So how much are you willing to spend of your own money on single payer?