There a LOTS of issues with Obamacare. It's unconstitutional in a number of ways, but one that hasn't gotten much attention from many people, even most conservatives, and is probably the most frightening and dangerous aspect of the law is this:
It doesn't just nationalize health care. It nationalizes.....you.
Government taxes our income, but you don't have to work. It taxes our spending, but you could mooch off others if you really wanted to. It taxes our property, but you could live without. Even if they might be extreme, there's always been a way out. The government has taxed lots of things, but before Obamacare, it never taxed us. And don't even think of committing suicide as a way out- it's illegal (plus it sends you to hell).
Under the new law, you and I, and everyone else is required to have health insurance. If we don't buy health insurance, and not just any old health insurance, but government approved health insurance, we will be taxed- simply for being alive. Think about that. A tax for not doing something. An un-sales tax. An existence tax.
In the early 20th century it took a constitutional amendment for the Federal government to tax income. Today congress has claimed the right to tax your very being simply by passing a law. What a difference a century makes.
So if the government has the authority to tax you $650 simply for being alive, what about $1000 or $10000? With the precedent set, there's no reason why it can't go up, and it will. The idea that you owe the government even $1 for simply breathing should make any liberty loving person cringe.
Of course while this is a new and dangerous development in the American experiment*, when you look at human history it's anything but new. In fact, there's a word for it- slavery.
*There is one thing comparable in US history. The draft, which asserts the same claim that the government owns you, at least if you're 18 or older, born with a Y chromosome, and aren't a pacifist.