People like boarder42 are the same ones that bitch about paying school taxes. "My kid isn't going to school so why should I pay for other people's kids to go to school?". Yeah, these people have almost no concept of "The Common Good". And in fact, their thinking is usually reduced down to:
Government Bad
Free Market Good
In free market health insurance, low risk people pay (much) lower premiums, and high risk people pay (much) higher premiums. With things like the ACA or single payer, EVERYONE pays moderately higher premiums and EVERYONE gets covered. The people that had sky high premiums are given relief and have better lives. The people that used to pay very low premiums bitch about the cost and how unfair it is.
This is why single payer is a better option than something like the ACA. Make it a tax and roll it out to everyone based on income, like we do with every other tax. Then everyone gets covered and all the waste/expense of multiple market places and state to state variation gets solved in one fell swoop.
We did it with Social Security and Medicare. We can do it for single payer, too. In fact, one of my secret hopes is that the Trump administration garners so much anger and so much ill will among the voting populace, that he'll be replaced in 3 years and we'll ram through single payer as a big middle finger to the conservatives.
Of course, as always, given how poor the red states are, they'll actually BENEFIT disproportionately from single payer. But even when you make their lives better, they're gonna carp about it.