[motform]

As much as I admire Processing for making it easy to draw pixels on the screen, something that seems to get more difficult every year, I do find it very difficult to use as a teaching tool. Going from Hello World to something more intricate is a bumpy ride with very few affordances, the feed through from drawing a rect to interfacing with I/O is, while obviously a difficult problem, non-existent. "Creative coding" also requires both a high degree of mathematical and artistic capability in order to be something other than a soup of primary color on the screen, something beginning programmer (esp. "non-technical" ones) tend to struggle with.

Then there is also the famous Bret Victor article: http://worrydream.com/LearnableProgramming/

That said, I still really admire what they did and how extremely influential it has been. Just a small thing like how the the Processing IDE was forked to create the Arduino IDE attests to how Processing continues to reverberate throughout history.