Australia has had medicare - something far more extensive than Obama care for a few decades now. We survived and it's amazing to be supported medically when you can't afford it.
Uh... Obamacare isn't free health care.
You have to pay for it.
Lower income gets subsidies, but it's not that much.
The only thing that is good about Obamacare is that it says Insurance can't deny you for pre-existing problems.
It is not "free" health care, it's "mandated health care" mandated that you buy insurance on the exchanges, get it through your employer or through some other form.
In some states where there are more than one option, it's great. It worked great in Massachusetts, however in other states like New Hampshire there are some people there who won't be able to see their local doctor and will have to drive 3-4 hours just to be seen.
We already have medicare in the United States, it's for the disabled and elderly. Medical is for the financially challenged, and for every child who does not have insurance.
I don't blame you since you're from Australia for not knowing what the Affordable Health Care Act is, but it's kind of sad when most people in the United States don't know what it is.