Americans under 30 are more likely to read a book by choice than Americans over 30
http://libraries.pewinternet.org/2012/10/23/younger-americans-reading-and-library-habits/
83% of Americans between the ages of 16 and 29 read a book in the past year. Some 75% read a print book, 19% read an e-book, and 11% listened to an audiobook.
Among Americans who read e-books, those under age 30 are more likely to read their e-books on a cell phone (41%) or computer (55%) than on an e-book reader such as a Kindle (23%) or tablet (16%).
Overall, 47% of younger Americans read long-form e-content such as books, magazines or newspapers. E-content readers under age 30 are more likely than older e-content readers to say that they are reading more these days due to the availability of e-content (40% vs. 28%).
60% of Americans under age 30 used the library in the past year. Some 46% used the library for research, 38% borrowed books (print books, audiobooks, or e-books), and 23% borrowed newspapers, magazines, or journals.