This. I used to have a large collection of hard copy books. I purged those and am now building up a large collection of eBooks. I only switched over less than 3 years ago so I don’t have 5,000 books on my eReader yet. I also have read a lot of library books that I delete when the loan expires.

With hard copy books, I discarded them because my bookcases were overflowing. I’ll never have that issue with eBooks.