why do you think, while most people don't want to live in a dog eat dog world, that we will have one in a free society?
naivete at its finest. why did we develop a code of laws to begin with, because everyone is an angel?
OTOH, if it was a dog-eat-dog world, it would not have been possible to develop a code of laws.
Laws are (or should be) about taking care of the outliers, people who can't act within reasonable civil behavior. Most people should not have any interaction with the law on a daily basis (of course, we've moved a long way from that).