I used to watch 7 hours in the hey dey of TV during my era, this being 85-95. But now I barely watch one.
TV Shows are not given a chance these days if they don't get instant American Idol ratings, so why bother investing in a show? I think the last new show that I stuck through from beginning to end was Star Trek Voyager. After that, the reality TV craze hit, Millionaire copy cat game shows emerged, and I pretty much gave up on TV.
My problem is I HATE reality TV and when you have what are IMO great shows like Battlestar Galactica (very expensive show to produce) getting about the same ratings as Jon and Kate Plus 8 you know quality television is doomed.