As more and more television sets abandon the use of the CRT for displaying images, you will no longer be able to pass a room or a house and say, hey they've got a TV on in there. The infamous horizontal oscillator whine, at 15kHz or so, is a symbol of great human innovation and creativity, if you ask me.
A complex machine which conveys a full color motion image, with sound, to an audience hundreds of miles away.
Don't know about you guys, but the CRT is dying at an alarmingly fast rate, and I'm going to have one around for the rest of my life, even if it's a late-model-BPC set.
Standard-def is fine for me, considering how little I watch.