@Jewish Samantha That works in a cash-less society, a society with limitless resources, a society without narcissists and psychopaths, or a society where rewards means nothing. But reward, having fruits of our labour either in the form of something we ourselves can get benefit from, or money*, is needed for satisfaction and a sense of accomplishment, without which we loose drive to work as it feels meaningless, a waste of time and effort (*preferably cash in hand, it affects the brain differently to digital money). And then there are narcissists and immoral psychopaths who abuse and take over a communist system almost immediately, exploiting it and everyone under it for their own wealth, status, and sense of power, while a capitalist system is less vulnerable (it still gets ruined by them once monopolies become a factor, but it it still doesn't get hit as hard as communism does). Every country that has tried communism has wound up with extreme wealth disparities between the vast masses of extremely poor people, and the ultra wealthy ruling class, and pretty much nothing in between them. Even from pure economy management, communism fails. Communism is a top down centrally controlled system, and those always, always fail once you get past maybe eighty people, two hundred at the absolute max in my estimation, because a single governing body can not handle that much constantly shifting complexity, it always breaks, people always suffer, people die. A system larger then a small village needs it component parts to move and operate like an organism, elements acting and reacting to each other more or less independently within a framework according to need and innovation, not a doll on a single puppet string.