I think for me it’s the scale of my work projects and lack of deep interest in the projects themselves. Hobby projects get started because I have some kind of interest that I want to expand on by writing some code. For instance, RF and aviation are two interests and I recently wrote an ADSB message decoder with a map kind of like flightradar24 does. That’s super interesting to me, so writing that code is fun. It’s also way smaller of a project than my work projects.