This may be one of the best discussion topics I have ever seen on this board.
I think about this all the time, as a musician, and I always come up with a slightly different answer. (Depends on my mood, I guess!

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I think, that to produce art of any meaning, and art that will move someone *else*, it needs to come from an emotional place. Now, whether that place is a happy, light place, or a dark place is neither here nor there, and I think the resultant piece of art will reflect the place from whence it came; it just needs to come from *some*where, you know? Otherwise, it's just a technical exercise...
Suzanne: I never use catalogs. I'd rather go in the store and see all the salespeople groveling and sucking up to you.
Julia: Pardon me, I never knew they were so solicitous at the K-Mart.