For most people on earth, the dark skies our ancestors had have now disappeared. The problem is urban sky glow, due mostly to too much bad lighting. Light Pollution is a growing threat to the nighttime environment. Glare, blinding us and harming visibility.
Glare is never good.
Clutter, trashing the nighttime environment, causing visual confusion as well. Energy waste, costing millions of Dollars a year in this country alone. Urban sky glow, which is destroying mankind's view of the universe. . There are solutions to all these problems. Good quality lighting is the key.