I'm going to be a bit bolshy here. Every time I see or hear the word Art, my back goes up. I'd never say that art is worthless, it might be one of the few valuable things in life, but a lot of Art that gets done seems to have no value, even aesthetic.

What art would you say is a valuable artistic endeavour? To note, I can quite consider science to be largely artistic (as well as applied philosophy), so it's not a clear area.