I think superstition is nothing more than an animal instinct based in "be afraid of what u don't know"... And as our knowledge grows up superstition tends to dissapear xcept 4 insecure people or people educated in a religious-superstitious ways... It's quite simple... we tend to fear what we cannot xplain...
That was the starting of religions and Cults... human had to find any solution to all those things they couldn't control, such as death, storms, weather changes,origin of live.... So creating a superior being that can control all that and venerating it was a way to avoid those fears.... Of course, this is just my (agnostic) point of view.