Government is necessary, at least to a point. Life would be more difficult with no laws and no maintenance or services, since anyone can do anything, including murder and robbery both of which are not good things. The whole "no crime due to there being no laws" is maybe the best thing I have ever read, but there should be laws against people committing crimes. I doubt anyone would live long enough to achieve their life goals, since there wouldn't be a need for affordable health care, or maybe any at all. Very few people would actually enjoy being a hunter gatherer society, which would severally drop life expectancy and have a far lower quality of life. In all, very few people would enjoy a hunter gatherer society as you suggested and would send the world back to the middle ages, back to when kings ruled and fought each other

Personally, I believe that the US government should be more like a confederacy than a federal system. The current system limits the state governments from doing what they think would be best for their people and is above the states, but should have the local governments be able to overpower the federal government on their laws (ie. legalizing marijuana legalization). The federal government should be either nullified or far more limited. Most of the things done in Washington DC are useless, especially politicians who just argue and waste tax payer money, and the idea of a president is also fairly useless because all the president do is make people hate him and potentially ruin foreign relation. The only thing that the federal government does that is actually useful is protecting us from rival countries. There should be an overall code for these states to follow and they are not allowed to put special tariffs across borders and in times of need are required to send soldiers to help protect the untied states. They would be united states, instead of a group of 50 states being forced to listen to a few guys argue over what they think is best for states they don't know about. In all, local government should always take priority over federal, unless the states violated the constitution or are attacking basic human rights.