> You make it sound as if I have a right to the content other people produce.
Yeah, you do, we all do, once a work is performed/released it is in the public domain, that is what the term _means_ "in the domain of the public"
Copyright is an abrogation of that basic right in limited circumstance and for limited time because the _default_ is and will always be public domain.
The purpose of Copyright is to make sure that works are produced because it recognizes the value they provide to our culture. Those works contribute to and inform our culture, they become a part of it much like we do. Copyright is nothing more than a tool to further the _base_ function of enriching our culture. The relationship between the work and or culture _is_ the most important part otherwise Copyright wouldn't exist.
It's _all_ about culture.