Superstition … Karma, Fate?

A Black Cat
I'd like to start by saying I'm no expert in this field. Quite the opposite.
I'm writing this small article to try and convey some of my opinions and ideas. It would be interesting to hear anything you may have to say in reply.
So it's a Monday morning and you're walking down the street. You casually notice 3 consecutive drains under your feet. Do you panic? To many this may seem a stupid question but I am aware that there really are people out there who would find the situation dreadful. Does stepping on three drains in a row really give you bad luck? To me this idea seems ludicrous. As a man of fact and knowledge, I know there is nothing to back up this theory.
There are many other superstitions you may have also heard of such as; black cats crossing your path, smashing a mirror and a pretentious cat with nine lives (more superstitions here if you're interested).