When I hear someone say "I don't much care about music" it's so hard to understand, as personally I feel it's a direct plug to emotions like none other. I regularly experience frissons when listening to an interesting piece - I've always thought everybody did! - and it can change my mood dramatically and instantly. I always feel I should listen to MORE music, but it's such an all-encompassing activity I can't do much while music's around. Some people fall asleep to music, and my brain instead just goes into (positive) overdrive.
EDIT: an anecdote about frissons: ages ago under the influence of strong psychedelics my frissons turned into multiple intense full body orgasms-like waves of pleasure, and it was clearly related to the music I was listening to, the relationship between instruments and the harmony and movement of dissonant sounds to final resolution. Such an amazing, transcendent experience I'll remember all my life. I've never been able to listen to Funkadelic's Maggot Brain album again after that day.
And all this has no clear value for survival? How did it evolve? Is there anything else we do, apart from appreciating "aesthetics", that has no survival reason?