We can understand some children being afraid of the dark. They are fearful because they can't see what is there. But why would some adults be afraid of the light? It's because they don't want to see what's there!
" But all things become visible when they are exposed by the light…"
Ephesians 5:13

"And this is the judgment, that the light is come into the world, and men loved the darkness rather than the light; for their deeds were evil. For everyone who does evil hates the light, and does not come to the light, lest his deeds should be exposed."
John 3:19-20

Why all the furor over God, the Bible, and Morality?
Why are Christians being criticized for their belief?
Why the demand to "turn off the light?"
Because darkness conceals, light reveals.

Jesus is the light of the world. And his followers are the light of the world.
John 8:12, Matthew 5:14
Christians are to let their light shine to reveal their good works, so that others may glorify their Father who is in heaven (Matthew 5:16); and to expose the evil deeds of darkness. (Ephesians 5:11-12 )

May our light shine ever so bright!