"The endless fallacy of state economic planning is that greed can somehow be eliminated from human nature. The virtue of capitalism is that it takes greed into account, and puts it to good use. Free markets give people incentives to satisfy their greed by providing things that other people really want, and which they choose to buy in a process of voluntary exchange. In that system, government is supposed to exercise restraint, rather than treating taxpayers as providers of an all-you-can-eat Washington buffet."
Go read the whole thing.