Except that people like a lot of the individual provisions of Obamacare, like no denying based on pre-existing conditions, kids staying on parents' health insurance until they're 26, etc.
It just doesn't do much to control costs. The current healthcare system has neither a single-payer forcing hospitals to keep costs down, nor much in the way of market incentives to keep costs down (since most people pay for healthcare indirectly via health insurance, and even that is controlled by their employer).
Problem is, they don't have anything to replace it with yet.
I don't think the Republicans want to go back to what it was before. I think they want to keep some of the good things about it like being covered for preexisting conditions. I also know Republicans want to allow insurers to sell across state lines which would increase competition and drive down costs. People on both sides of the aisle have been saying this for years.
confirmed:
Modify existing law that inhibits the sale of health insurance across state lines. As long as the plan purchased complies with state requirements, any vendor ought to be able to offer insurance in any state. By allowing full competition in this market, insurance costs will go down and consumer satisfaction will go up.
https://www.donaldjtrump.com/positions/healthcare-reform
There's actually some other good ideas in there too.
"Republicans" say rip it out, go back to what we had before, don't adopt anything from it.
"Democrats" say to keep it and try to fix it.
Can it be fixed? Who knows. But ripping something out because it isn't perfect after two years is completely insane.
The US has a completely broken healthcare system and handing it back to corporations isn't going to fix it.