Maybe if the books in your library aren't touched, that's a sign that the chosen books aren't the most valuable
But I disagree with the diagnosis! As Patrick Collison says,
> I guess I fall somewhere in the middle in the Umberto Eco theory of the library[0].
[0] https://www.google.com/books/edition/How_to_Travel_with_a_Sa...
(Quote from https://patrickcollison.com/bookshelf)
I've pretty much hit steady state though. No more bookcases/piles of books. I don't have a lot of incentive to go beyond that for now, though I'll probably donate at least a few more bags to my library's book sale at some point over the coming months.