things that you can find elsewhere. I'd say a lot of other activities are more effective at giving you those things. If you need me to LIST EXAMPLES then I will, but I don't think it's necessary.
I'd say out of most of the arts even music is the most easily disposable because of the amount of effort it takes to produce, and also because of it's incredibly temporary and abstract nature. Well certainly music can be emotionally moving, so can a play, and theater seems to communicate much more effectively to people than music because everyone understand talking and words and not everyone understands music the same way.
Besides, all art is just a way for us all to waste our time, and certainly their are other ways to waste times like sports and other games, discussion etc.
It can be hard to see life without music because you deal with it so much each day, but I guarantee you'd be fine and completely happy if music never existed. Certainly if music was BANNED you wouldn't be happy, but I'm sure you could learn to live life and enjoy it if you let yourself.