"Some writers have so confounded society with government, as to leave little or no distinction between them; whereas they are not only different, but have different origins. Society is produced by our wants, and government by wickedness; the former promotes our happiness positively by uniting our affections, the latter negatively by restraining our vices. The one encourages intercourse, the other creates distinctions. The first is a patron, the last a punisher."(From Common Sense, quoted in the linked posting about Bill of Rights Day by Alan Korwin of Page Nine, via Joe Huffman).
Seems to me that the extent to which we succeed in restraining our own vices -- and individually discouraging others from the commission of the more egregious ones, like assault and robbery -- is the extent to which we don't need government, even arguing, as many do, from the standpoint of government-as-public-utility.
People aren't perfectible but perfection is not required, just an honest effort at civilized behavior on one's own part and a willingness to provide negative reinforcement when circumstances necessitate
Just a thought.