The rise of e-books in American culture is part of a larger story about a shift from printed to digital material. Using a broader definition of e-content in a survey ending in December 2011, some 43% of Americans age 16 and older say they have either read an e-book in the past year or have read other long-form content such as magazines, journals, and news articles in digital format on an e-book reader, tablet computer, regular computer, or cell phone.
In a head-to-head competition, people prefer e-books to printed books when they want speedy access and portability, but print wins out when people are reading to children and sharing books with others. We asked a series of questions about format preferences among the 14% of Americans age 16 and up who in the past 12 months have read both printed books and e-books.
As a rule, dual-platform readers preferred e-books when they wanted to get a book quickly, when they were traveling or commuting, and when they were looking for a wide selection. However, print was strongly preferred over e-books when it came to reading to children and sharing books with others. When asked about reading books in bed, the verdict was split: 45% prefer reading e-books in bed, while 43% prefer print.
You may read more about the growth of e-reading and download the Pew report from this link.