Heavily disagree, friend. Capitalism by itself is bad. It may have good things, but that hardly justifies the inhuman and cruel roots it stands on. Capitalism does not assume that its proponents should be free of greed, it wants them to be greedy. Why the hell would you want to keep expanding your money if not for greed? Capitalism runs on this principle of self expanding value and inequal exchanges. It strives for profit, nothing else. I haven't studied communism well enough, but communism doesn't assume it's proponents to be immune to greed, it dismantles the institutions by which greed operates(money, class, and state).