One of our issues is that we are out of shelf space. Our house has floor to ceiling shelves in 2 rooms (complete with a library ladder) and not a single room is without some shelf space with books, even the bathroom! All the books have been read one or more times and just last year I donated several hundred books to the library that I didn’t think I would re-read. My list of paper books owned is 56 pages long for non-fiction, 26 for fiction and 31 pages for kindle. These are ODS files in in 12 pt font
I don’t have a house big enough to hold all the books I have if I didn’t use electronic books.