As someone who is disabled and faced the woes of American healthcare...
I experienced both socialized medicine via the military as a dependent (before this quasi-insurance system called Tricare too), and now as a disabled person in another form of socialized medicine: SSDI/SSI (I'm a dual-eligible because I was disabled early in life).
While there are merits in Universal Healthcare (like getting the care people need), it comes at a price of limiting access to treatments. The very treatments the disabled need to live and be independent.
Universal Healthcare is designed to prevent health problems. They will ensure you can get to the doctor for that stomach ache before it becomes a nasty and costly infection to treat in the hospital. But if you need expensive surgeries or devices to be relieved of suffering? There's a denial system for it and a wait list. Universal Healthcare also gives up more readily on the "hopeless" (which is a slippery road to down to "death panels").
So much that the disabled has to organize to protect themselves FROM dying in our healthcare systems -- even in countries like the UK that has universal healthcare for decades...
On one hand I can see the benefits for everyone getting the routine healthcare they need to stay healthy. That to me is a RIGHT, not a privilege. But on the other hand experiencing healthcare from universal systems, I can't justify people suffering, too (Oh, God I've experienced and seen SUFFERING on government socialized medicine! I remember at the Army hospital watching my friend's father frantically trying to locate his wife's medical records, as the Army ER at the time would NOT treat anyone without their medical records in hand -- and relatives had to get the records themselves from the medical records department. They lost her records, and his wife died never getting treatment). To be denied a medical device as a cost saving effort for the current fiscal year, only denies the more costly correction later.
In my case above, a $1,000 CT scan would've prevented me having strokes (I had zero idea I had them even. My symptoms weren't anything I saw as stroke signs). But to save money, and the rules of healthcare at the time (couldn't treat 2 conditions on the same day! They thought it was a stomach problem, and treating that), has me even more disabled today. I have no pain relief; no TENS unit; I have trouble just walking now, and how can I even approach a doctor for A medical device so I can move with ANY comfort, when I don't "look" ill as I hide the pain "so well"? For my cane, it took the PTs 2 weeks to get me a Medicare approved letter ... I went ahead and bought one myself. Do they expect me to buy a motorized wheelchair myself, too? Can't wheel one anymore due to the stroke. They're beyond my price range to even consider buying ... and oh, I have been looking so I don't have to just sit here in front of a monitor or laying down as "my day".
All I can say is this as a solution: whatever healthcare system we get in the future, please don't advocate the mess we have even now with SSDI/SSI. Think of a better healthcare system that is realistic: healthcare isn't a "for profit" system. It's just like other public systems, it will ALWAYS run in debt. Health can't be made to profit, as any down time humans have is costly ... they lose wages just being ill. They lose jobs because of chronic conditions. They lose insurance due to pre-existing conditions, too.
Let's call healthcare for what it is: a welfare system that keeps people alive (and for capitalistic reasons, alive to work).