When I was a teenager forty years ago, I listened to records on my $15 columbia "system" with two speakers.
This statement perfectly encapsulates the crux of this issue, in my opinion. I also listened to two-channel music for hours and hours starting from when I was fifteen. I listened in my room on a dedicated system, and in so doing the experience of listening to a dedicated two channel system was made a part of my life experience.
Fifteen year old kids do not listen to two channel music today for hours and hours on dedicated stationary two channel music systems. They listen to two channel music on computer systems in their rooms, or on iPods, which are mobile listening systems intended primarily as background music scoring to other life experiences.
Young people experience music today in completely different ways than we did in our teens and twenties. This is the paradigm shift to which I refer in an earlier post, and this paradigm shift is precisely why dedicated two channel (and I would argue multi channel) music reproduction systems will never be a focus of the computer gaming/iPod generation.
However, this is not to say that music will not be an integral part of life for these kids. In fact, I would bet that whole-house, server-based music systems could be quite important to them, but this is significantly different than the two channel audiophile systems which are the primary focus of these forums and the audiophile hobby as it exists today.