In the end, political priorities overrode all other considerations for Obama and the Democrats. Obamacare was a great way to bestow yet another huge benefit upon potential Democratic voters which someone else was going to have to pay for. Contrary to Obama's promises, it did nothing lower the cost of healthcare for Americans. It was just a gift for 8 to 10 million potential Democratic voters, insurance companies & big pharma....and the bill for all of it, in the form of huge premium increases, was just sent to the same people who were already paying for everything else.
There should be no doubt in anyone's mind that the Bush Administration dumped a financial mess in Obama's lap when he took office. Likewise, there should be no doubt in anyone's mind that Obama is leaving a colossal financial mess in Trump's lap with this Obamacare debacle....because we now have millions of new people under coverage with no fair or reasonable way to pay for them. It's going to be impossible to just cut them off...so what the hell is Trump supposed to do? This is what happens when you just keep throwing government benefits at people to win votes and don't have any idea how you are going to pay for them.