I don't have a TV, and all of my friends who do rarely use theirs. Added together, I'd say I watch about an hour a fortnight of TV material. And that's mostly on my phone or computer's screen.
This might be a generation thing. With tablets and smartphones everywhere I don't feel I'm missing out. On the other hand, my father needs the constant babble of the TV. It could also be that my circles and I are outliers against the norm, but I very much doubt it.
[1] http://www.infoq.com/presentations/We-Really-Dont-Know-How-T...