Not the OS.
As artificial light is a thing, why the fuck do I need a window in my bedroom? Do you know how fucking annoying it is trying to get it dark in here in the middle of the day? When I turn the light out, I want the light to fucking go out. Why are windows in bedrooms still a thing? Curtains? Curtains are a goddamn joke. Blinds? Weak as shit, they break after about a month. Shades? Never used 'em, but I seriously doubt they'd cover the entirety of the window.
The only thing that's ever worked is having a bunch of blankets over my window, but that looks fucking retarded. I understand in common areas like living rooms and in bathrooms and shit where nobody wants to have to waste electricity or anything, but at least the windows there aren't such an inconvenience.
I wish I could plaster over my window.