I don't like anything weighing over 20kg. Those 30-inch 2560*1600 monitors I had in 2007 were too heavy. Modern replacements are based on AH-IPS panels with improved quality and thinner dimensions.
As far as I know, there's no inexpensive 32-inch, 37-inch, 42-inch, or any larger size panel for TVs and computer monitors that is both thin and light enough. That'll take at least a few more years for that to come in mass.
Dell's probably releasing 28-inch 3840*2160 monitors for under US$1,000 and it's by now apparent Apple's soon releasing 3840*2160 or higher resolution monitors with Thunderbolt connectors.
Just how big a TV is big enough for anyone? What about the energy cost to keep the place (a place large enough to justify the size of the screen) to watch TV warm in winter and cool in summer? What about the rent cost if you are not the owner? Electricity consumption's another issue. 50-inch LCD consumers a lot more than 30-inch LCD. A typical 27-inch 2560*1440 monitor consumers almost twice as much electricity than a 27-inch 1920*1080 one.