Hopefully, as we grow older our musical abilities/sensitivities - players and non-players - will develop and deepen. I'm amazed sometimes, listening to recordings from back in my youth, to suddenly realize, for example, that the lead guitarist on a particular track, that thrilled be in my youth, has no idea what his is doing, and is simply throwing together a string of unconnected licks in the hope that something worthwhile will emerge. Likewise, certain music that puzzled me in my youth, now sounds very logical and accessible. And, of course, there are people out there who are still puzzled by music that now makes perfect sense to me.