Take Botero. He's a man widely known for his stylish paintings and sculptures. The above painting is from his series on the Abu Ghraib.
As long as you know why you're doing it, you can't let the critics get in the way. Stay true to yourself and to your muse. You'll be a better artist for it.
(BTW, Botero hasn't received a penny for his work on Abu Ghraib.)
"Writing is like prostitution. First, you do it for love, then you do it for a few friends, and finally you do it for money." ~ Moliere