I enjoy nerding over new technologies, learning how and where it's worth applying them, and how they are implemented internally. I do enjoy working with people (strange, isn't it?).
But most of all, I enjoy getting things done - that's the moment dopamine kicks in!
Bonus points:
I code to try out new things. My professional career is centered around webapps backend development in Java, but I have a continues hunger for knowlege, and I can't help learning new things. I want to find a balance between specialization, and general broad knowlegde in the wast sea of available technologies both frontend and backed. I believe that trying out new things broadens one's horizons.
I read to get my head relaxed.