Very nice analysis on a very interesting topic! I agree that humans do NOT have to have a government to rule over them. If you think about, you could let a child grow up away from society and it wouldn't behave badly at all. People only get influenced by the media, government, and everything we see and hear. Even money is not a natural thing. So if a human being's nature is just to be peaceful, without jealousy or any negative feelings that we have today.. wouldn't that be an ideal world where no government is needed? The human being is its own worst enemy, we're managing to destroy our own race and the planet we live in more and more.
So if everyone would influence their friends, everyone surrounding them positively, couldn't we make this world a better place? Of course there will always be psychopaths, but those are only 0.001% of the population. If everyone of us truly tried to change themselves, their views upon the world and their behaviour, I do believe we could change the outcome of this planet and we wouldn't need a ruler at all.