Keep in mind that the Bible also says that he who does not work, shall not eat. Basically, earn stuff. That is why I think that welfare should be limited to only a year or so of living off of it. That would motivate people to get real jobs to sustain themselves.
That being said, communism's ideals are noble but impractical. It just cannot be implemented properly and would require fundamental changes to the way human society functions and the way we behave.
I agree with this part of Inv3rted's post. In addition to communism's impracticality, the leaders of those countries would be to power hungry. Communism already gives most of the control of nearly everything, and human nature would cause the leaders to crave more and more power, and then, blam. You got a crappy country to live in. Communism already failed Russia, that is why they are capitalist now. Simply put, communism will eventually fail anywhere it is implemented.
Edit: Page 3 claim