It is nice to see that you care about how others think you were raised to believe. Perhaps you think they will pity you since you grew up in a house of bad standards.<quoted text>
Well I really could care less what you think about what I was raised to believe. Do you believe human beings are instinctively good or evil? The thin veneer of civilization holds most human evils in check, if the sun emitted a giant solar flare and put the United states back into the 1800's do you believe people would work together to help their fellow man get through it? or be eating each other in a matter of weeks.
As to the second part of your post, the government might fail, but groups of people would still work together. It would soon be obvious that a group working together could protect their own property from lone marauders. These communities would grow as they realized that bigger groups could withstand groups of marauders and soon we would have a civilization again. Maybe not as well developed as today's, but it would be a series of civilized groups and not Rambos the would rule the new U.S..