I used to randomly pick up books at bookstores or the airport when I didn't have a book. I just realized now that I haven't bought a physical book in person since I started using my Kindle a year ago. I've got 150-some books on there, most of them free from Gutenberg.org.

It's not obvious that the Kindle stopped me from buying books - I didn't realize it until now. But I certainly would've picked some up wandering past a bookstore or at the airport if I didn't have the Kindle.