Television addiction is like sunlight to most artists' inner Dracula. Television itself is not so bad. It often becomes a problem because it is so addictive. At its most addictive it's mindless but fun entertainment with music, bright colors and captivating material. If you become (or are) addicted you will not only not be able to spend as much time on art, but you will often be unable to wake up on time in the morning because you stole sleep from yourself by staying up late to feed the insatiable television beast.
Everyone has to find their own way to deal with this. My answer was to pick one show, and just watch that. In case you're wondering, it's Wheel of Fortune for me. The rest of my free time I write, practice piano, or draw. That's a much better use of my time than watching a box in my apartment.
Perhaps you'll agree with me in time.