If you like open source software,
or Creative Commons licensing,
then you like copyright.
Open source software relies on copyright to force all future
development to remain open. Without copyright the orginal
creator wouldn’t be able to stop people closing his code.
Creative Commons licenses let us decode what rights to give
away. For example, we can allow people to use our work only if
they credit us, or only for non-commercial purposes.
Copyright gives us these choices. Without copyright, anyone
could use our work for anything, including selling weapons.
That’s a very good reason to like copyright.
It’s All We Have Left.