Don't turn your hobbies into work unless you are willing to no longer have it as a hobby. In other words, once it becomes work, you can't escape work by doing it outside of work.
When I worked in an emissions shop for a county, I hated working on cars, but tinkered with computers. When I switched back to working in computers, I worked on the car and hated working on computers.
Once a hobby becomes work, you have the potential to lose that love of it. Granted, we have a few anomalies here on this list, but just be aware.
joe