Dean, I wonder how much of what you're talking about has to do with getting older? I'm not an old man (though these 20 year old co-workers I have are starting to make me feel that way), but at 31 I'm actually starting to realize that I'm not immortal. And not that I have it figured out yet, but I'm much more cognizant of when I'm consuming something that I'm not really enjoying, or that I'm using as a time waster. Like you with your pull list, I've been very quick to drop tv shows that don't work for me. I used to watch so much out of habit, and now, I would rather do nothing, than watch something just because I've always watched it.
For me some of it might be getting older (38), but its related to being desensitized too. I've consumed a LOT of media in my life and it does change how I view stuff. And the other part is being busy. After you get done with work, get done with the work you have at home, put kids to bed, etc......I have an hour or so every night to myself and I'm pretty choosy about how I spend that hour.