I can't resist. Whenever I come to a person's house, the part that interests me most is their bookshelf. I don't care for their furniture, their drapes, their coffee cups, it's their books I'm interested in. The question is, can I judge them by the books they read or display? (Of course, the next question would be, does he read the books or are they just there to show off.)
Or in public, someone reading in the train or in a waiting room, my eyes wander instantly to the book someone is reading.
So, do you or don't you? Judge them. I know I do. If someone has a similar interest to mine, I instantly feel we share something, have something in common, something to talk about.
Doesn't mean I dislike the person who has different books. People I have the biggest problem with, you guessed it, are those with no books at all. What kind of a world is that?