I never put the light on in the night, like others there is a street light nearby, we do have a little plug in light which is handy before going into the bathroom. I hate lights thet waken me up inthe middle of the night, I sometimes keep my eyes closed and drift off to sleep easily.
OH turns the spotlights in the bathroom on as soon as he opens the door, our bedroom is right opposite the bathroom, very handy, but not useful when its like Blackpool illuninations at 3 AM, why cant men sit down to do their business in the night, it wouldnt need lights to find the object in question!