You seem to be confusing social structures with anti-social structures (government). Government is the opposite of society, in every instance. Good trick they played getting people to confuse the two, though.
Anarchy won't lead to Utopia. Nothing will. In fact, your whole argument is the long-discredited "But wouldn't warlords take over?" objection.
Cling to theft and aggression if that's what you prefer. I won't stop you. All I insist is that you stay out of my way.
RE: Tortured "complexity"