Love the dark
We shouldn't ignore the fact that darkness also has a value.
For astronomers (even just those who gaze up at the Milky Way and go 'Wow!').
For those who prefer watching TV or using a computer/tablet/phone without trying to cope with several bright light sources bouncing off the screen.
For those who want to rest their eyes from the day's glare and those who like to sleep with no distractions.
Oh - and vampires.