The natural man requires some sort of order in his life, lest it be cut short. In primitive times, this sort of affair was needed, even desirable. Man is not the same as he was thousands of years ago. Supposedly, man is civilized. The central evil in today's society as perceived by anarchists, is government.
Government is invariably oppressive and is used by the powerful solely to maintain the status quo.
Also a key problem, is technology. Society and technology have not been allowed to progress at the same pace. Beginning with the Industrial revolution, where massive inequalities were seen, to today, with automated factories, technology has developed faster than society. Fearful of what might happen if the workers were to gain power, the rulers of the world exploit them mercilessly. Man can exist without a system of controls.