First off, there are many, many different forms of anarchy out there. Just wanted to clear that up, as I support only a ceratin form.
Governments are uneccesary and inherently destructive and exploitative to humans and the enviroment. They restrict and destroy human freedom, and we are better without them. They are hopeless, to answer your question, as they will always be a system of control. Having said that, they can be improved. For example, I know that a green/eco-anarchy is not goingo to happen over night, so I will vote Green Party in politics, as they have some OK ideas in terms of our country and politics. To me, it's like choosing between Republicans and Democrats (mega-crap) and Green Party (some good ideals, but ultimately against anrchy).
I have a lot more to say on this subject, but I'll wait for a few more posts.