Obamacare is a failure plan that replaced or supplemented a failed system, and the Republican plan is worse.
The issue is very emotional, and emotional people don't want to discuss reality from any perspective.
Medical care is 17% of the USA GDP, and shows to be averaging over $9000 per person per year.
There is no insurance based system that will fix it. There is no single payer that is politically designed that will fix it. And, at this cost level, we are raising the national debt to pass the problem to the next generation, which you are a part of.
The USA medical system actually supplements global costs allowing other countries to have cheaper systems when discussing drug and medical equipment costs. Did you know that Medicare, by law, cannot negotiate drug prices?
Did you know that more Republican voters are on food stamps than Democrat?
Did you know that the federal grants to states on total is a higher percentage of budget of Republican states than Democrat?
However, without major structural change with how medical care is provided, and decisions NOT to spend large amounts of government money on expensive life saving of individuals is pretty much required to make the system affordable for the vast majority.
Anyway, neither political party is worth a plug nickel.
The premiums are being reduced by spreading costs and pushing some into the future. The Republican plan spreads the costs differently, with less paid by the wealthy. Neither fixes the cost of care overall. Universal health care is not possible in the current system, nor any simple easy to understand solution or fix.