Marxism is an evil man's attempts to try and come up with an economic system based on something he found in the Bible that was never meant to be a long term solution.
For those who have never watched any of the "Dragon Ball" franchise, the name of the character on the left is "Freeza" and the one on the right is "Cell."
Thus...
You're demanding reason from someone who bases their beliefs on emotions rather than facts. (Not Derf, but any kind of person who would make such an argument.)