I like the post of Neil Gaiman's library that I copied to here: https://jakeseliger.com/2009/09/07/bookshelves-offices-and-n.... I still have an (expanded) version of the shelves in that picture, but I've switched towards reading more long-form articles on the Kindle, and more Kindle books in general. Life is too short to pay extra money for book storage in apartments and to spend a lot of time physically managing and moving books.
I also read ebooks because life is too short. Ebooks are always with me in my phone and I can read them whenever I want, without planning to take a physical book with me. I read as ebooks all the latest paper books I received as presents and most of the ones I bought myself.
My apartment is too small. I'd _love_ to have a library with physical hardcover copies of my favourite books. But there's no way I can spare a wall only for books.
With 12,000 books maybe but with my 300 I know where each book is even if I sort by color.