I did pretty well for myself building galleries and interactives in Flash and Actionscript; it was not just a good learning experience, but a more stress-free implementation compared to getting JavaScript to work cross-browser. I was still doing AS work into 2009. For me, it wasn't the inevitable obsolescence from iOS that caused me to quit, but an Edward Tufte seminar in which I saw that static visualization could be just as compelling as interactive ones, and a lot easier for end users to figure out.