>>If people general prefer a dark sky at night, why do we have so much lighting? I'd first point to the Tragedy Of The Commons. For anyone to put up one extr

>>If people general prefer a dark sky at night, why do we have so much lighting? I'd first point to the Tragedy Of The Commons. For anyone to put up one extra light or string of lights, is only a small extra cost to the installer. But the externalized costs and cumulative effect is insanely destructive. If we think about it, it makes no sense to screw up the lifecycle of almost every plant and creature on the planet. But most people are entirely ignorant of the harms, and cognizant only of their naive preferences and fear of the dark. So, they put up a light, or string of lights, or entire parking lot or city of lights. Without considering the consequences, perhaps beyond the budget. Just because something has been built does not mean that there was a good justification for it. It only means that there was a bad but sufficient justification for the immediate cost and that the externalized costs are ignored.