I think that part of my aversion was due to the Flash intro fad, which I hated very much. It was especially bad, because I was still using dial-up internet when Flash intros were at their peak. My attitude started to change when Youtube became popular, and I started playing Flash games in Facebook.
I now want to learn Flash. I started last night and I have already made significant progress. With over 20 years of programming experience, I can easily learn Actionscript. It’s just another programming language, and it bears many similarities to other languages that I already know. As with all other languages/technologies that I have learned, I am making a practical application to teach myself the basics. I am redeveloping a variant of Tetris that I originally created in 8086 Assembler for a final project in college.