I'm an artist and I'm on antidepressants. I can tell you now that the alternative to being on meds is not worth it.

I can only speak from my own experience, but when I'm not on antidepressants I'm too flat to feel a creative spark, and when I'm on them, my creativity is dulled. I can work with feeling dull though, I only had to adjust how I worked. I became a lot more methodical, I found a style I like and that other people like and I stuck with it. My style used to be a lot more organic before the meds, but my work was crap! I prefer my post-med work without a doubt, and so does everyone I know. People feel I've actually found my calling and no longer go quiet when I tell them I want to expand my career. I think being on meds has allowed me to grow as a person and see a different kind of beauty in the world.

Also, read "The War of Art".