One shouldn't have to take a vacation to see the night sky, when quality lighting is available and often less expensive than conventional fixtures. Many Americans live in urban corridors so large that it isn't practical to drive out of town just to enjoy the stars. It's too late to do anything. Our awareness of light pollution is recent, and it will take sustained effort to change the habit of overlighting. Nonetheless, it is a problem that can readily be solved with available technology.
Education is the key.
Security lights prevent crime. No one really knows if outdoor nighttime lighting prevents crime. It can deter illegal activity by making it more visible, and it can also make a house or business a more convenient target. Most crimes take place during the day. If outdoor security lights are needed, there are many to choose from and many installations that are effective but not polluting.