Do you buy physical books you have already read?
For example; I have read a book named “The Words We Keep” digitally. I loved it, it really resonated with me because it’s about something - I personally have and struggle with as well.
Thinking to buy the book physically but feel like, I can’t justify it due to the fact that I’ve already read it.
I don’t really re-read books either.
I buy books that I have already read if I would like to: have one around, reference, reread, recommend/loan/give, or to start conversations.
If a book was important to me intellectually or emotionally, just having a copy around and just noticing it occasionally reminds myself of whatever was important about it, and that can be valuable to me.