In Japan, houses and apartments usually have at most one transparent window. The rest are heavily frosted. It took a while to adjust to that model but once I did I wished we did this more in the US. You get more light during the day, since clear windows don’t actually let in that much light unless the sun is shining directly in, then it’s usually too much light. You have absolute privacy — you can walk around buck naked without having to draw a curtain anywhere. And, unless you happen to be in the minority and have a killer view, frosted glass makes it less distracting to be indoors. Random stuff going on outside doesn’t steal your focus at all. The fact is that for most people there really is t much to look at out their windows — a crumbling street, the neighbor’s fence, the wall of the apartment building next door, a parking lot. But of course if you do happen to have a killer view, you can always have a clear window in that direction.