It is much harder to wipe out a system than it is to change it. Instead of preaching anarchy find the worst flaws in the current system, like rampant greed or the wealthy having a separate set of laws for their business and work at changing them. Then your time won't be wasted. It's not a good thing that the population has grown so much. It will be harder than ever now to exert some form of population control so that the problem will be solved by the time population is a problem in those places.
Comfort seems to be greater but people work at least eight hours a day for a comfortable life.
In hunter gatherer societies I believe each individual had to work about four hours a week. You also say that the most important thing government is doing is providing the chance to be the first species to deal with potentially genocidic asteroids. A meteor supposedly killed off the dinosaurs and humans rise some time later. You pose a good argument here. I skimmed through your post and just wanted to bring up a few points of interest.