I work in aviation safety/training. The most meaningful work I've done is developing code for flight simulators, so that pilots can learn how to handle real-wo

I work in aviation safety/training. The most meaningful work I've done is developing code for flight simulators, so that pilots can learn how to handle real-world problems. Sometimes that means modeling data from flight recorder boxes, which is a special treat. Reading through the list of things you don't like, one thing they have in common is being software-only. Hardware products have a huge impact on people's safety and well-being that might inspire you. Aviation, robotics, medicine, even manufacturing.