If you've talked to the other Muse trainers, they probably go on about art bringing beauty, and cheering you up, and blah blah blah...
I think they're missing the point. The purpose of art is to make a connection from one person to another, on a level that you can't achieve just by talking. Now whether you use that connection to inspire them, or to render them helples, well, that's up to you.
May your well of inspiration never run dry!