We've also got to think about the actual value of preserving all of these works in a completely indiscriminate manner. Curation is important. Even assuming, for the sake of argument, that we could keep everything forever, actually doing so would ultimately harm the value of the archive, due to Sturgeon's Law. The truth is that the vast majority of cultural output is of only ephemeral value. It's relevant to a place and a time, but not necessarily great enough to also be interesting to people from a different place and a future time.

And I've only got a little bit of time in this life; I'd much rather read a trashy romance novel that was written this year and meant to entertain me than the trashy romance with politics that make me cringe that my mom was reading 50 years ago.

This is why, for example, the Library of Congress doesn't just keep a copy of everything. It's not just a space constraints or storage costs issue; it's a signal-to-noise ratio issue. As Mark Crislip is fond of saying, when you mix apple pie and cow pie it doesn't make the cow pie better, it just makes the apple pie worse.