Some wise words of caution:
I've supported some form of single-payer solution for decades out of a simple desire to reduce the costs of claims administration but I haven't cared for the form that most proposals take. I don't think that universal coverage does enough to control costs to be affordable and, indeed, without some form of fiat pricing would quickly be overwhelmed by increasing costs. That gives weight to the concern that many critics of both single-payer and universal coverage have that either system is just a stalking horse for some sort of fiat system. I'm reminded of something one of my old economics professors said - that we don't know how to create abundance but we have a pretty good idea of how to create scarcity and it's through fiat pricing.