The problem with fine art is that in most cases people have to make a special excursion to go and look at it: they can't afford to own it. So it isn't really part of their life in the way that music can be.
You can't really imagine music without technology.
When you sing with a group of people, you learn how to subsume yourself into a group consciousness because a capella singing is all about the immersion of the self into the community. That's one of the great feelings - to stop being me for a little while and to become us. That way lies empathy, the great social virtue.
I think there's a lot of similarity between what people try to do with religion with what they want from art. In fact, I very specifically think that they are same thing. Not that religion and art are the same, but that they both tap into the same need we have for surrender.