I don't understand why anyone would support capitalism (at least the real-life version). In capitalism all property is owned by individuals or a corporation. Unfortunately not all property is equal.
I don't mind. And don't get me wrong. I'm not rich. But I'd like to think that one day I will be above the average. I'm a competitive, arrogant, and somewhat egotistical bastard. Capitalism is the best game to play if you want to be better than other people, not just on an equal (or very similar) footing.
Anyway, I'll address a point made by Tshern now: "Take Canada, Sweden, Norway, Switzerland ... as an example ... TAXES ARE GOOD."
Except, in Canada, because health care is a government service, the wait is absurd, whereas in the United States, if you have the cash, the line is much shorter. Sure, not everyone has the cash. I certainly don't (poor college student syndrome). I still think it's better than trying to guarantee everyone health care and costing many people that could afford it their lives while they wait (yes, I'd prefer that as opposed to costing many people their lives because they cannot afford it). Where medicine is a governmental function, such as in England, fewer people seek jobs as doctors and physicians too because it is a less lucrative practice. As such, fewer major breakthroughs are funded and made in such places. In the long run, as more technologies and medicines are produced, costs drop, and eventually the evil, greedy capitalists are making health care more accessible. Of course, they'll never sell such developments as cheaply as they could because they need to protect their profit margins, but it's still progress.
I will admit I'm not the most informed expert on this topic, but I have studied some of these topics, so I'll throw out information as I find it relevant.
Oh, by the way, we wack-job libertarians are pretty cool.