Its not human per say, that is the cancer. cancer is mindset of privatisation of things which weren't and never should be private, its the SYSTEM that is the cancer, not just human nature as truth is most humans are nowhere near as greedy and psychopathic as people who created and defend the systems we have, which they have bee using to manipulate mindset and society overall, and this is what the real cancer is, its entity which has polluted human mind through propaganda (Advertising, Religions, 2-side Politics, TV, Radio, and all other forms of Social media). And only way to cure this disease... IS TO REMOVE IT FULLY from society.