Even kings, presidents, and religious leaders have rules. No one is immune. We are subject to rules in school, at home, on the job, in traffic, and during leisure.
Rules provide protection and establish boundaries for behavior.
While many rules in the world do not go away, as teens grow into adults, many rules change. Think about it. As a child, you did not get to choose your bedtime or what you wore to school. Now you have some choices about these issues. Sometimes, parents are willing to negotiate on some rules.