Lol , that's really weird, not gunna lie.
I'm freaked out by windows at night time. They have to all be covered, or else I race past them, or I have a panic attack and completely stay away from view of them. I do this because I'm scared someone's looking in at me, but I'm unable to see them.
There once was a guy who walked across the front lawn at night, got down on his hands and knees in front of my bedroom window, and tried looking at me beneath the bottom edge of the blinds.. We had to call the cops, but he ran away before they showed... And then a week or two later, I was walking in some skimpy pajamas, and I got a creepy vibe to turn around, when through the basement door I saw the shadow of a man, and the flash of his camera went off ...
That's why. You'd be scared of it tooo =/