IMO the natural right is for humans to share what they've learned up to and including verbatim reproductions of works by others. I also think that abridging this right to grant some exclusivity for artists (the broader "art" meaning scientists/writers/authors/musicians/coders/etc) is suitable. Copyright is/was a good idea. Its fair use clause is a good idea. The duration of exclusivity under current laws, however, seems excessive and beyond mere encouraging art.