Indy, for the most part, we agree on PPACA. It's not unconstitutional (at least, for that and other common reasons). For instance, the meme about "government can't force you to buy something from a private company" is bunk. The government, through building codes, tells you that you cannot have an unlicensed electrician perform work on your house. In order to comply with the law, you have to buy services from a private company with a proper license. This is but one of thousands of examples.
However, I do take a small bit of issue with the argument that "Republicans created this idea in the 80s, and now oppose it". A lot changes over 30 years. Lest we forget that the Republicans also supported the Civil Rights movement in the 60s, while many Democrats opposed it. Fast forward 30 years later (90s), and suddenly Republicans are the party of "white yuppies" and Democrats are supporters of downtrodden minorities. Yes, it's a flip-flop. But, when you talk about a 30-year time frame, many things in politics do that. It shouldn't be surprising.