Yes, digital music exists, but you haven't convinced me why I should listen to it. I'm sure some of it is awesome, and most of it is junk, just like all music has been through the ages. The difference is that with old music, I can rely on the "test of time" to weed out the junk.
One can spend one's whole life exploring music which has stood the test of time and is pretty much guaranteed to be awesome. By sticking to critically-acclaimed classics, one pretty much eliminates all risk of hearing junk music. One also loses the opportunity to hear new great music in its infancy, but so what?
The classics also have "canonicity". By exposing myself to them, I better understand references to them in novels; I recognize them in movies; I have something to talk about at dinner parties; etc. None of this applies to some bandcamp page with ~1000 all-time listeners, no matter how good the technology.
You talk about this new music being so great, but is it qualitatively anywhere near as good as the classics? Again, as I said in my first comment, can you post some examples? If some new band is conquering the world because they've discovered the long-hidden Fundamental Theorem of Music, then I want to know about it!!! (But I doubt it, because if anyone had done so, it would usher in a new "mania" like Beatlemania, and I would have heard about it already.)