There are still a lot of problems with the ACA. Most of those relate to cost, but there are others as well. Hillary Clinton has promised to work on those and help make the program better. While she would love to, she knows better than to promise "single payer" because that is not up to the President, it is up to Congress, and I think it is fair to say that congress is not playing along at this time. But there is nobody that thinks that health care is fixed, certainly not the democratic candidates, just improved.
Before the ACA I was uninsurable. A blood disorder and a previous bout of cancer made it possible for insurance companies to just say no. That was legal in America. It no longer is, because of the ACA. My particular state offered an "insurance of last resort" that put me in a high risk pool and allowed me to get insurance at ridiculous prices, but I could get it. Many states had no such pool and there was no federal equivalent. The cost was too high, I had to remain uninsured. The cost was, btw, more than you were paying for 2.
If you have or get virulent disease or cancer or need a transplant or any other heroic medical treatment there was a limit on how much the insurance companies had to spend to make you well over your lifetime. Should you ever go over that limit you were on your own, no matter how much you may have previously paid them. That limit no longer exists because of the ACA.
I could go through a dozen or more examples of other ways the ACA has made it possible for people to get insurance who couldn't before, including the millions who have been included in the Medicaid expansion in those states where Republican governments haven't stopped it over nothing but partisan spite. There is even a state out there that has one of the best ACA programs of ANY state, but a new republican governor has promised to kill it, because he can.
I am very sorry,
@His_Highness, that you are still having difficulty getting good insurance at a reasonable cost, and I will be the first to agree that it needs to be dramatically improved to cover more people at better prices, but there is NO denying that half a loaf is better than none and the ACA in it's current form has improved millions of lives and probably already saved thousands from untimely or unnecessary deaths.
I hope the next Democratic President can vastly improve the ACA, and I will do everything I can to help. But I garrundamntee you that if we elect a republican to the white house they will do everything they can to destroy the program and replace it with nothing. They have all promised that. And the insurance companies will be back in total charge of your medical care, and whether your life is worth saving. Unless, of course, you are a gazillionaire and can pay for your own heart transplant...