At last, I have found my people..
I only ever turn lights on if i need them, and notice once a light has been turned on, my eyes adjust so that they need more light to see by than before.
DH, bless him, turns lights on as he leaves a room, I kid you not, so its on when he comes back.
We had a bit of adjusting to do, when we first moved in together. At least, he no longer when he is up first (on my precious, precious one lie in of the week, gets up, turns on the big light and disappears into the en-suite for a lengthy session....
I have some wifi controlled bulbs and switches, all very expensive, so thank you to PocketCoffeeExpresso for the tip about the wifi switches , they look exactly the same, just different supplier, result.