[cimmanom]

As a hobbyist, you have a freedom to work on meaningful problems that most companies and engineers don't.

I suggest you look for problems that it's valuable to the world to solve even though they may not be profitable. Solve problems for homeless people or people in third-world countries who can't afford to pay for software or services.

Create tools for NGOs to use. Write open source libraries for other people to build software on top of so we don't have to use the Googles and Facebooks of the world.

Or solve a problem that's too small to be profitable. Create a community tool or a babysitting bulletin board for your homeowner's association or co-op board. Write a transit app for a small town.