We will save money and energy as a nation by doing better as individuals, at home and at business. We must . All this wasted light and energy is doing nothing to promote safety, or a better life at night. In fact, it does the opposite. It costs us money and energy to have a trashy nighttime environment and to wipe out our dark skies.
Glare never helps visibility, never.
Light trespass usually offends neighbors. Glare and light trespass are also factors in many accidents at night, by blinding or confusing drivers or pedestrians. All this costs the nation far too much in money and pain. We shouldn't tolerate it. We must stop such waste.