I think that most of today's youth, raised on iPods and MP3's, do not appreciate the glories of audiophile sound because they've never had a real opportunity to sit down and listen to a two-channel system with music that does the system justice. And I don't mean heavy metal and grunge rock. More like very well-recorded, possibly hi-res quality, classical, jazz, rock, and acoustic music. So, yes, in a way, it probably is an "acquired" taste, not to sound snobbish. I'm convinced that, most people who do listen to quality audio will be hooked and will want more of it. That's how I got into it. Started out with a very modest system, then realized, why not audition a few higher-performance gear to see how they sound. I don't believe hi-end audiophile quality sound is innate -- unless someone finds a gene for audiophilia! Unlikely.
Just my 2 cents' worth.