Everyone is pointing out potential problems with the methodology, but really this matches up pretty well with experience. SQL, MS Office stuff, boring things like logging, and testing all show up as being about work. Haskell is actually infamous for having an evangelical following and limited real-world uses. And, yeah, your C-like languages work well for both work and side-projects. This all makes perfect sense. The only thing I'm surprised about is assembly being for pleasure (maybe hardware people?), and web stuff being as versatile.