Ah... cognac.
I think we here are a different lot. We care about sound, in most cases high quality sound, or we wouldn't be here.
I don't know anybody in my social circle that has a decent stereo, much less a home theater system. I know a few who have boomboxes, or those "mini" stereo systems, and one who has an HTiB.
I don't know the reason why, but when I was younger, in the Navy, in college, EVERYONE had a stereo. Everyone sat and just listened to music, vegged out to whatever, rock, jazz, whatever. Some did it stoned. Some did it straight.
Is it MTV? Is it the price of CDs? Is it MP3s and free downloads where bands become faceless? I don't know, but somewhere along the way things changed and music isn't the focal point of their lives. It's background music, incidental music.