I'm not sure why it should. When did we get this strange idea that when you make some piece of content, no matter if it's quality or not, it deserves to pollute the cyberspace forever.
I realize this is an unpopular opinion, but one of the reasons nature "works" is that everything old is allowed to dissolve and become the base ground for the new that will come after it.
People naturally copy content that they find interesting. And content which isn't that interesting naturally gets lost. Maybe that lost content stuck around enough to inspire someone to do something in that spirit later or (which also counts), but it doesn't survive itself.
Imagine if everyone gets Glasses one day and starts doing non-stop 1080p video stream of their lives. Are we going to be "pissed off" at that being deleted too?
If you do the stats you'll notice that over 99.99% of the content in archive.org is never accessed. Nobody cares.
And that's how it should be. We should really allow content to die. I have the firm belief that information doesn't just "want" to be free. It also wants to be allowed to die gracefully at some point.