I'm the same way. My current work project is in fact more interesting and ambitious than any of my side projects (distributed rules engine fed with realtime sensor data to take autonomous action to optimize workplace convenience for office workers), so I haven't spent meaningful amounts of time on a side project in months.
I do still work on dev talks to give to user groups, it engages a different side of my brain than the programming side projects do.
I do still work on dev talks to give to user groups, it engages a different side of my brain than the programming side projects do.