Communists think that capitalism is a distorted concept that alienates humans.
However, trade has always been present throughout human history, and the (natural) advancement of trade by mechanization leads to capitalism. Capitalism is the evolution of trade the same way that a full-grown man is the evolution of a child.
Ironically, the distorted, unnatural concept that alienates humans is communism.
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Capitalism has been one of the greatest contributions to our civilization. To the survival of our species. My labor is a sacrifice for a means of exchange and I am not force but I use my resources in any shape or force I desire. In truth I don’t have to go into the jungle and sacrifice my life for a mineral or resource, I can simply barter for such things and produce a greater asset. Yes! This itself has led to our advancement and to our large population growth contrary to the communist philosophy that has cause millions of deaths because of this principle they believe in theory yet has never produce true fruits. Even when I travel into the unknown the most common man understands this principle as a better way of life. 
