The best thing about universal healthcare isn't how much money I may or may not have to pay, it's that I literally don't once have to think about a bill or filling out a form to avoid paying too much.
I wouldn't care if I ended up paying more in tax than I would in an insurance model. The benefit is being able to 100% focus on my health instead of navigating a system to try to reduce what I'm paying.
When you're diagnosed with an illness, that's a huge peace of mind.
Most countries have both public and private. In Spain I have public and then private on top of that which 220 eur a month for a family of four all services included and no co-pay. The public option works to set a roof on what private insurance can charge.
In many countries where "universal healthcare" actually exists, you end up with waiting lists and rationed care. Choose your poison.
Trust me it doesn’t work perfectly in other countries. Yes, americas system is messed up but in countries like Sweden you will still have to navigate the system to actually get the healthcare you need. There are people who are denied healthcare in Sweden because the govt has deemed that it’s too expensive to save them (while people with similar conditions and a good insurance in the US are covered).