Zero power draw is still less than a little power draw. A couple million of these babies running on idle is a considerable amount of power. Please, turn off devices when you're not using them.
Any modern computer system uses a lot of power for a few minutes after bootup. If you use the machine a few times per day you're wasting energy (and your own time) by turning it off instead of using sleep mode.
Completely agree! We just 3D printed a base switch that makes it easy to turn your Mini on and off. Here's a link: https://m4button.com/ (if you have a 3D printer, you don't need this).