Comment by jvert

I like to learn new things; I find it energizing, especially when I am feeling burned out. Sure, it can be difficult but that is also what makes it rewarding. It's also really interesting to see the different tradeoffs that have been made between different solutions. (Linux vs Windows for example)

Ultimately, it's all just code and problem solving. And you can usually find a way to leverage your expertise in one domain into a different domain.