For free.
I've written infrastructure software that has, without a doubt, saved a lot of lives, and will continue to do so, for many years to come. I've been working on a client implementation that leverages that software, for the last couple of years. It's approaching ship (but still a ways off). One of the goals of that project, is to help train a few young friends in the ins and outs of what it takes to create shipping software.
These projects would be worth a lot of dosh, if I were to hang a sticker on them.
But I did them for no money.
Society (especially US society) does not value vocations that help others. Teachers are incredibly well-educated, but treated like dirt. The same with social workers. We value individuality and selfishness. In fact, we actually deify these qualities.
It's an issue, but one I have no ideas how to solve. I think that the right to spend money on what we want is an important one, and I won't gainsay anyone else's right to do that. If driving around in a Model X and having a model (of any gender identification) on your arm is your priority, and you have worked hard for that, then Godspeed and good luck. I have different priorities, and the story of how I got them is long and winding. Not so many folks have backgrounds like mine, and not many that do, have developed priorities like mine.
I am grateful to be in the position I'm in.