I read a lot about Creative Commons a couple years ago.

Now, when I want to copyright something, I need to file a copy of it with the copyright authorities. (I forget who they are right now.) But as far as I could tell, I don't have to file my work with anybody to get a Creative Commons license. I merely pick the license I want, then
type it onto my work, and it's done.

I can certainly understand why no one is volunteering to keep an archive of the great amount of creative work which nobody wants to bother to copyright.