That's the core concept behind a Health Savings Account and has been excellent in my case.
If you think of it as a 401k - put money when you're young before you need it - I think it is viable for many people under in their 20's and early/mid 30's.
But HSA's were eviscerated until Health Care "Reform" so it probably doesn't matter now anyway..
I'm sure that you're aware of this (and is why you used the word "many"), but the fundamental problem with this is the assumption that you're saving when young for what you need when old. There are those of us who aren't particularly healthy through no fault of our own.
While I'm sure no system under the sun could be made universally fair, it seems particularly unfair to saddle people with vastly different costs based on purely external factors. With nearly every other expenditure I can think of, a person has a choice whether to pay it or not, or at the very least whether to pay more or pay less. If I wind up in the hospital, there are a certain number of things that need to be paid for no matter what. My employer gives me an option for a regular PPO and an HSA-based PPO. The latter would have cost me several thousand more a year.
And all of this notwithstanding, this methodology of health care payment doesn't appear to me to work for people who actually have no or very little money. I'm fortunate enough to not be one of those people at the present, so I couldn't say for sure how an HSA-based health care system would be any better or worse for them than our current system.
Of all the things I'm thankful for, being thankful that it's not my job to try to figure this stuff out is near the top of my list.
If you think of it as a 401k - put money when you're young before you need it - I think it is viable for many people under in their 20's and early/mid 30's.
But HSA's were eviscerated until Health Care "Reform" so it probably doesn't matter now anyway..