Just for the record, I was not planning on doing that nor am I encouraging anyone else to do that. But freedom to redistribute is a core component of the CC-BY-SA.
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Yah! Totally appreciate that. I guess I'm depending on the ethics/morals/personal-judgments of the people who buy my work to do what they think is right. I was deciding between CC-BY-SA and CC0, and I think I decided on SA because I wanted anyone who modified the art to also distribute their art by the same license.