Why do people shut their rooms in the dark when they see me in broad daylight?

Hello, this may be a misunderstanding of your psychological function. Maybe someone wants to turn off the lights.

Others may just see you when they want to turn off the lights, which makes you have a misunderstanding that you won't turn off the lights until you see them. It's sunny in broad daylight, so you need to turn off the lights to save electricity, or it's someone else's personal preference or habit, so don't worry.