Software engineer here. There are so many projects that I'd love to contribute to, but can't because my regular job gets me so mentally exhausted and I can only switch context so much. My job is fulfilling, don't get me wrong, but there are so many other projects that are desperately in need of help but can't get any because it's not profitable.
I'm looking forward to the day that I switch to a more relaxing job so I can do some more side projects. I know exactly what my retirement is going to look like. Fuck the economists for telling us what's important and what isn't. They only think about one thing: money. And as long as it makes money, it has purpose in the world. They can't possibly fathom that there are important things in the world that don't fit into their one dimensional economic view of the world. Fuck them so hard!
If you want to see what the world would look like without the GPL, just look at how the BSDs are getting shanked by Apple (and many other companies too, but they're the biggest).
If it weren't for him, I have no idea what Linux would be today. No doubt in my mind, RMS is #1 on my list of most important software developers to have ever lived.