Anarchy by definition is unstable.
I'm all for death and rebirth of fallen decay, but don't throw the baby out with the bathwater.
We don't even live remotely close to a hundred thousand years ago and without civilization advanced technology would likely not exist (medication, education, etc. requires society) - assuming you want/like the tech we have now.
I have my life because of advanced tech and so do a lot of people in the world. How do we move forward? No middle ground / all or nothing?