TV ?! What's that ?

I use to watch tv at my grand ma's when my parents leave me there for the weekend.

Then I never watched TV.

Why would you watch tv ?! This is crazy. Why not read a book or spend time with your family and friends or... So many things to do and to learn, too many people to be with (a whole planet indeed). I do not understand this "watching tv" stuff. Aren't you going to die soon ? Nothing better to spend your time on ?