Most people moaning about it are doing so for 1 of 2 reasons: it's taking money away from real struggling artists... (spoiler alert... there is no money in music for 99% of musicians anyway, unless you're playing covers in a pub every friday in which case the robots are not going to take your job anytime soon). Or... as the above said... art is about a human being communicating a feeling to another human being not just something nice to enjoy (or something along those lines)... which yes is obviously true (in part) but also kind of ridiculously naive/idealist/stupid in multifarious ways.
Sorry. Didn't read any of the thread prior to the post before mine.