I do, but that's mainly because of working with older and/or more professional devices which don't (want to?) consume power even when technically off. But for the rest, yup, doesn't really happen that often.

there are no intuitive interfaces, only familiar ones

Most screens in the office, when 'off', look like a matte black box with a single clearly visible button with a dim light. You can claim it's familiar because nearly every techincal appliance has a power button, but on the other hand: I am quite sure if you'd give this thing to a homo sapiens or similar, arguably not familiar with a button, it would not take too long befoer that button would get pressed.