"Anarchists are simply people who believe human beings are capable of behaving in a reasonable fashion without having to be forced to."

Anarchism is, essentially, optimistic.  Much more, worth reading in full, @ the link..

Are You An Anarchist? The Answer May Suprise You! by David Graeber: "Chances are you have already heard something about who anarchists are and what they are supposed to believe. Chances are almost everything you have heard is nonsense. Many people seem to think that anarchists are proponents of violence, chaos, and destruction, that they are against all forms of order and organization, or that they are crazed nihilists who just want to blow everything up. In reality, nothing could be further from the truth. Anarchists are simply people who believe human beings are capable of behaving in a reasonable fashion without having to be forced to. It is really a very simple notion. But it's one that the rich and powerful have always found extremely dangerous.

At their very simplest, anarchist beliefs turn on to two elementary assumptions. The first is that human beings are, under ordinary circumstances, about as reasonable and decent as they are allowed to be, and can organize themselves and their communities without needing to be told how. The second is that power corrupts. Most of all, anarchism is just a matter of having the courage to take the simple principles of common decency that we all live by, and to follow them through to their logical conclusions. Odd though this may seem, in most important ways you are probably already an anarchist — you just don't realize it.
Let's start by taking a few examples from everyday life.
If there's a line to get on a crowded bus, do you wait your turn and refrain from elbowing your way past others even in the absence of police?
If you answered “yes”, then you are used to acting like an anarchist! The most basic anarchist principle is self-organization: the assumption that human beings do not need to be threatened with prosecution in order to be able to come to reasonable understandings with each other, or to treat each other with dignity and respect.
Everyone believes they are capable of behaving reasonably themselves. If they think laws and police are necessary, it is only because they don't believe that other people are. But if you think about it, don't those people all feel exactly the same way about you? Anarchists argue that almost all the anti-social behavior which makes us think it's necessary to have armies, police, prisons, and governments to control our lives, is actually caused by the systematic inequalities and injustice those armies, police, prisons and governments make possible... "