again: you want to fix a broken arm? it will be done here, immediately. IN the UK--wait a week or two.
Cancer? you're getting scanned and put through routine within the week. boom.
It all depends on what you're talking about the UK and Japan and France are much better with general healthcare--the day to day stuff that most Americans take for granted and if practiced, would actually improve their lives drastically and reduce the chances of catastrophic care.
For those that are insured, this isn't a problem. But tons of people only go to the doctor when they absolutely need to, which ends up costing them more had they gone regularly, or simply taken the initiative to take better care of themselves. Medicine, as practiced from country to country, is also quite different. We tend to push tests (not always a good thing), and opt for the big fix for potentially minor problems. Surgery? no problem. Go to a UK doc with an aching back at age 47? Doc: does that really ruin your life? stiff upper lip, chap!
--that's not exactly wrong, of course, it's simply a different philosophy of treatment, and life, really.
Thing is, we have shit-tons of money in this industry, and shit tons of highly trained, well-paid specialists that no one can match anywhere else. For any major procedure, there is a US hospital or institute that does it better than anywhere else. period.
This argument you make is silly, as it merely addresses a tiny hair of the issue, and speaks to nothing about "better" or "quality" or "coverage."
And you still think it's free for you?
lulz.