58% of the US adult population never reads another book after high school.
42% of college graduates never read another book.
80% of US families did not buy or read a book last year.
70% of US adults have not been in a bookstore in the last five years.
57% of new books are not read to completion.
found here: http://parapublishing.com/sites/para/resources/statistics.cfm
Rex Chung 
The very reason we chose some “alternative” means of getting our message and ideas out instead of writing books.