A couple nights ago I realized just how much I love what I'm doing. I was hanging out with friends who were back in town for Thanksgiving until 2:30am, and despite having a blast catching up with those guys, all I could think about on my drive home was how pumped I was to finish implementing our oauth2 server for our API. Indeed, I went right to work when I got home (don't worry - I hadn't been drinking with my friends) and worked until I was just too exhausted. I went to bed really happy.
We have yet to release our core product to the world, and won't do so for another few months, but I imagine once all our cool stuff goes live and we have more users, this experience will only get better.