I was reviewing the changes in iOS 9 today. It was a bittersweet moment. What I was seeing were interactions and interfaces and coordinations that I had so wanted to be involved with developing when I was 20. I am too far removed from the tools and skills needed to do this kind of work today. Perhaps I should just be glad that these tools exist and that I use them. It would have been gratifying to point to a patch of pixels and tell my family "that's my work."
Update: In my late 20s I was hired by Apple's Advanced Technology group. I was elated. A few weeks later the offer was rescinded shortly after John Sculley ousted Steve Jobs and put a freeze on hiring. I was miserable.