Strangeness began the week summer began and the days started getting shorter. It had to trigger something. In Chicago, winter was a snowy beast and we're on edge. It's a stronger sense in Leaville around October. Those people are actually fighting to gather supplies for the winter at 10,198 feet above sea level.
So, the story I'm telling begins billions of years ago when the first life appeared. Remember when we ate the first thing it came across because it was too close. This continued for sometime, but eventually it died. New life formed and it too ate, but stopped because it had a feelin. It needed more, so the next time something got to close, it waited and eventually reproduced, and the two feasted on the kids...
Over time I think the survival instict calmed a bit and feelings, emotions and other things evolved to help us along the way. Today, I can argue it's the same, and a few out of a billion are just born with the initial responses and for survival never learn the other things.