If you don't have any money, Medicaid will pay for your insulin. If you do make money but are living above your means so you can't afford health insurance or the medicine itself, then you are doing it wrong.
That's not true; I'm American but I have personally been to more countries where the poor are (much) better off, in terms of health care or just generally. For instance, Canada, Japan, Spain, France, Germany, Netherlands, UK, Portugal, Belgium... well shit, let's just call it "everywhere I've been but China and Mexico". And even those last two could go either way.
People of privilege truly believe that it’s simple but it isn’t.
If you're talking about making it taxpayer funded instead, you should remember that all taxes are collected under threat of violence and imprisonment.
Now I've run out of fingers on one hand
Germany, Italy, Sweden, Norway, Finland...