People buy, or don't buy, books for all sorts of reasons. (For example, some people show off their books.)
Aka the ubiquitous bookshelf behind the person in their zoom calls, stocked with carefully selected book titles.
Though it's tough to beat von Braun's bookshelf:
https://www.flickr.com/photos/mrdanbeaumont/20033929484
I bet he'd even read them. Love the hole in the ceiling.
People buy, or don't buy, books for all sorts of reasons. (For example, some people show off their books.)