Let's distinguish somewhat between a standard and a conviction. Young people often comment that they cannot wait until they are on their own and there is no one telling them what to do. They fail to realize that no matter how old they get or where they go, there will always be someone over them who will have certain expectations for their conduct. Society, in general, has certain criteria for conduct. Even though society's standards continually change and would not always be acceptable to us as Christians, there are still some behaviors which society considers to be unacceptable.
Acceptable behavior is that which conforms to the criteria.
As Christians, our goal is the development of Christ-likeness in our lives. Christ is the standard, the criterion, that determines the acceptability of our lives. They want things to function in an orderly manner. Many rules are simply an effort to help things run smoothly in a community of people. Young people need to learn to live with consideration for the whole, not simply themselves.