Indeed! I also found it let me indulge in a secondary passion of mine which is fuel efficiency. For example, when I'm building it myself I can make the walls ludicrously thick and insulated to the point where it stays a relatively moderate temp inside even without climate control. I built a shed to use as a luxury dog house, and it was tight enough that a single small space heater could keep it quite pleasant in the winter (when outside temps would be a low of around 12 deg F and high around 28 deg F).

Material costs were a little ridiculous, but since I'm only building for myself that wasn't a huge issue :-)