Last night, 4h30AM, went to the bathroom. Through my window I saw the neigh's bathroom window with the light on. Mine was not. Unlsss there's an emergency, I don't turn on lights during sleep time. I can walk in the almost dark, and I sit down anyways, so I don't even have to aim too much. Do you?

Incidentally, we taught our kids and they never developed fear of the dark.