That is likely true for a majority of “the good stuff”, but making that determination can be tricky. Let’s consider spam emails. In our daily lives they are useless, unwanted trash. However, it’s hard to know what a future historian might be able to glean from a complete record of all spam in the world over the span of a decade. They could analyze it for social trends, countries of origin, correlation with major global events, the creation and destruction of world governments. Sometimes the garbage of the day becomes a gold mine of source material that new conclusions can be drawn from many decades down the road.
I’m not proposing that we should preserve all that junk, it’s junk, without a doubt. But asking a person today what’s going to be valuable to society tomorrow is not always possible.
I’ve noticed this even when trying to find the name of a song. I used to be able to search:
and it would very reliably find songs, even obscure ones. Now the only way it works is if I happen to remember part of the name of the song, usually it’s full of entries for the same popular song that has one word in the title that I included that is definitely not what I’m looking for.
It sounds stupid, but I really miss that working.