The safety and crime-fighting benefits...
of outdoor lighting are real, but greatly exaggerated. I'm sure you're familiar with the Dark Sky Association, they put out a great deal of literature on this topic. The amount of lighting could easily be cut in half by proper design of lighting fixtures, and employing lighting only where needed could cut it in half again. In my experience, most "security lighting" serves mostly to ruin your night vision and provide villains dark shadows to hide in.