Power consumption is the only thing I can think of to justify buying a new TV. Hardly enough to chuck out a good, working TV though!
Well, I'm increasingly annoyed that my "square" CRT is not respected by broadcasters, who insist on sending only the "movie theater" image which gets cut off at either side of the screen. Now, my converter box can "fix" that by blacking out the top and bottom of the screen, which I don't like much either. I paid for the whole screen, I want to use it! But on satellite, I haven't explored that possibility.
I also am not about to let those broadcasters dictate to me that I have to not only buy a new TV to replace one that works just fine, but also new furniture. Even if you mount the thing on the wall, if you've got a 5-foot tall cabinet now, you'll have to junk it so you can see the bottom of the new screen.
What humors me is seeing all these huge TV screens in small 3-bedroom homes. (After dark, take a walk around and you can see them through a window.) Who needs an image that large when you can only get 10-12 feet away from the TV, max?