And if everyone switched off/unplugged all non essential electrical equipment when not needed the savings/environmental worldwide would be huge! A couple of Watts x 10’s or even 100’s of millions is a lot.
When I had a largish (analogue) desk I would leave that on permanently, solely to reduce the gremlins that can creep into these things when thermally cycled repeatedly (damp/condensation) thousands of components heating up cooling down/repeated expansion/contraction and all that!
Shut down pooter for me and switch off monitors 
Not to mention the small fire risk!!!