I stopped watching TV six years ago, as my monthly subscription was increasing a few weeks ahead of the London Olympics. It just didn't seem worth the price, as I was run off my feet running a small business at the time, and rarely had time to watch TV.
I thought I could keep up with my favourite programmes on the catch-up service - but it was incredible how quickly I lost interest in those programmes. I watched some family shows at my parents' house, but after a while those shows just seemed glib and uninteresting.
All this to my mind shows that TV is indeed an addiction - the more you watch, the more you want/need to watch. I used to feel as if I was missing out on something if I missed my favourite TV programmes. But after I went cold turkey, the TV held no interest for me. If I'm in a room now and the TV is on, it's usually just a matter of minutes before my eyes glaze over and I go and do something else. And I sleep pretty well!