I mean, the answer is so obviously in front of our faces right now... :-)

Use the free time to learn some Zig! And start a life of happily giving back powerful and useful GPL software to put your own 2 cents on the mountain of society building blocks that allowed you to thrive in such a way to begin with.

It's surprising how few people do this; mitchellh is the exception that proves the rule.

A lot of the really valuable open source software gets written by people who aren't wealthy and have full time jobs doing something other than writing open source software.