Forensic geneticists and evolutionary scientists are searching
  for Eve though - and others looking for Adam... a prototypical
  "first human pairing", so they may, in fact, have existed: first
  humans... just perhaps not quite as illustriously protrayed as
  they are in Genesis, which is a not a bad explanation of "Why
  people are mean to each other and often just plain old suck".
  Maybe not the best, but there's some truth to the idea that you
  can know *so much* about good and evil that you no longer care
  anymore about your fellow man, or anything really.

  In the end, I think it was an old "Don't talk to strangers"
  story for children, much like the Troll under the bridge or
  Slenderman a few years back in Creepypasta land.