1) If you fall asleep while reading you don’t miss anything.
2) It’s quiet.
3) You can do it ANYWHERE including places with no cell service, electricity, wifi, or satellite transmission.
4) It’s private, just you and the author linking minds and ideas.
5) It’s free with a library card, and sometimes even without!
6) There are no commercials.
7) Your mother will not mind if you do.
8) Books are easy to share.
9) TV and movies have been around for less than 100 years. Books have been written for thousands and thousands of years. Everything you need to know is in them.
10) They are so much fun to pick out!
I think one reason is that TV is filled with crap. So much that's on TV at any given moment is really bad.
You Learn More
The Medium Is The Knowledge
It Helps Your Creativity
It Can Help You Socialize
Because television and movies are heavily edited and condensed for time they can't give the same depth of story. A book may take 30 hours to read but it has to fit into 90 minutes for a movie. There are a lot of shortcuts needed to trim that amount of time away from a story.
Television is all about packaging a bunch of cool little bits together quickly. In restaurant terms TV is fast food and books are top of the line restaurant meals.