That's really interesting to me - Can I ask if you enjoy the work? Or if it gives you a sense of purpose or a sense of being part of something bigger?
Personally, I work at a job I don't really enjoy but which I'm good at, and which gives me enough time to work on the stuff I care about (from creative projects to fixing furniture and computers to give away). My hobbies are cheap but I'm saving to try and conserve land, and I suppose even if most of my money wasn't earmarked for that, I'd still work the job because we need health insurance and money to survive emergencies (although I think I'd do more donations per year rather than saving it for one big project).
I derive most of my sense of purpose from the projects, from helping out in my community, and from the conservation stuff. If the need for work vanished somehow, I'd still work on all that other stuff, I think I'd either focus on it more or I'd take on additional volunteer tasks.