Here you have another OpenSource.com article well worth reading: Open source as a civic duty. A few snippets follow:
Considering that I am an employed programmer living in Silicon Valley that is generally thought to not be incompetent, you could deduce that I’m not worried about how I’m going to pay for my next meal. I’m not rich by any stretch, but I have a reasonably comfortable lifestyle, and that’s all I’d ever really want. After all, does a programmer need much more than a laptop and a cup of coffee to be content? Given that I’m not stressing about whether or not I’ll have a place to live and food to eat next month, I’m among the most fortunate people in the world.
As a whole, GNU has saved humanity man-centuries worth of work. There’s very little time spent developing operating systems and basic utilities anymore, because that is mostly a solved problem. Instead, we use GNU tools that others have spent the time to build, freeing us up to pursue other challenges
Anyone can do this, it doesn’t require much money or time—just a sense of the bigger picture.