Complete overhaul, replacing old system with European-style universal healthcare.
Partial overhaul, including expansion of Medicare, reworking of profit-based insurance system.
Sparse overhaul, based around getting rid of the profit-based private insurance companies.
Nothing needs to change, the US system is good the way it is.
Men do what they have to when they want to, Great men do what they have to, even when they don't want to.
As for your friend, imaginary or not, recall that he doesn't have to shell out for social security, healthcare, education, or any of the other 'added costs' that are taken care of by the state.
You don't seem to understand this: No one would willingly pay more. If one system clearly helped everyone to have way more money, we would all use that. But the funny thing is, over the course of the 70 years of the NHS, numerous studies have been done to prove that it IS worth it. If it wasn't worth it, nobody would do it.
Healthcare must be funded, somehow. That is a universal truth. Whether it comes from your taxes or from your wallet is a largely unimportant detail (though it's also a fact that Americans pay MORE for their healthcare than Brits or Frenchmen do).
However! A system where it's every man for himself has all the morality of a cannibal tribe. You can't call yourself a civilised nation if you refuse to support your fellow citizens out of pure, pathetic greed.
You, individually, will pay less and get better service if the US had a nationalised healthcare system. Add to boot that you wouldn't be stuck in the 19th century philosophically speaking, and I can't see why so many Americans resist it.
God Bless the Marine Corps.