http://tv.adobe.com/watch/photoshop-20th-anniversary/startup-memories/
In this 18-minute documentary, produced by the Adobe TV and Adobe Content Strategy & Service teams, John Knoll, Thomas Knoll, Russell Brown, and Steve Guttman tell the story of how an amazing coincidence of circumstances that came together at just the right time spawned a cultural paradigm shift unparalleled in our lifetime.
One thing that stood out for me was near the end when one of the creators talked about hearing from people who said "Because of PhotoShop, I have a career". This is one of the most important reasons why I spent over 10 years of my profession life working on ColdFusion - the fact that what I helped create had thousands of users who made their living using it. That what I did for my job made a major impact on others. There really isn't anything more that a software developer can ask for. At least this software developer.