People do have an aversion to the dark, but it was pointed out in a previous post that children are afraid of the dark if they feel there either meant to be or they can see personal advantage in being scared (note; not acting scared, but being scared).
Id also like to point out that to the best of our knowledge, pre historic humanity was not scared of the dark, but of what the dark may camouflage.And with good reason, considering we started out as leopard bait.
Then again, maybe if youre not scared...youre not paying attention?
"Have you ever considered that what you have been told as a child was a lie? "
thats pretty much how i ended up here