The best reason I’ve seen for wanting a big-screen TV:
Piping MultiWindow Android from a tablet to it!
Over at 1Pad there’s an illustrated step-by-step [Google English] of doing it using a prototype TV stick from Rockchip. The tablet used is a Pipo M8 Pro with quad-core 1.6GHz Rockchip 3188, 2GB RAM, and a 9.4-inch screen at 1280 x 800, running Android 4.2.2 with MultiWindow Android.
And here’s a video: