What could you be doing if you never watched TV?
I tried this experiment two years ago when I unplugged the TV and stopped cable. And wow. I've read more then ever, got more work done, took on new pursuits, and exercised more.
(Of course, when I travel and have a working TV in my room, I'm absolutely captivated because I'm so TV-deprived … )
Try unplugging your TV for a month and see what happens...