Houses are not much different. Many modern homes have few windows. They will have windows on the front, but few on the sides or back. People want dark rooms, it seems, to watch television.
And I am not kidding about this. I know folks who are convinced that light will bend around corners (which it will, near a very, very heavy celestial body). They are so scared of being "seen" they stuff rags in the cracks around their window shades, convinced the "peeping Tom" has some sort of zig-zag vision and will "see in". Venetian blinds are never enough for this set - hey, if the light can come in then surely people can see in, too, right?
As I noted, a lot of this Count Dracula behavior relates to television. People want to watch Tee-Vee and outside light glares on the screen. So they turn their living rooms into darkrooms. And maybe some of it is related to energy saving, trying to keep heat in or heat out, depending on the season.
But lack of natural sunlight can be hazardous to your physical and mental health. Sunlight productes vitamin D in your body. And it keeps your mental attitude sunny as well. Living in the dark is depressing and dull.
Let the sunshine in! Pry open your coffin, and live!