Pros and Cons of Communism

In theory, communism resolves the "problem" of capitalism. It nationalizes banks, factories, transport, and land reduces alienation. It creates a strong sense of community and treats people as more than just an economic end. The creation of communism brings about the education of the proletariat and a raise in general consciousness. Communism also seeks to get rid of private property, however, which is a more controversial issue. And although it might at first seem to bring perfect equality, it hardly seems fair to have some people work harder than others be be rewarded financially in the same way. Another problem is the unrealistic expectation of altruism from the citizens who are already receiving great financial rewards, because why would they ever want to lower their standards of wealth? In theory, a lot of different things could happen with communism. I wonder what it would look like if it were ever actually put properly in to action?