Superstitions :S

Superstitions are beliefs that some things can’t be explained by reason and there are certain objects or actions that bring good or bad luck.Most of the superstitions are old and people don`t know where did they come from.I don`t understand how can people believe the things which has no reason.For example they say that we musn`t open an umbrella indoors because that will bring bad luck.But they don`t say which kind of bad luck is it or what might happen to us.There are also some things that people use to bring luck.For example when people talk or want something to happen they usually knock on wood,they believe that this will avoid the bad luck.I just believe to evil eye and i'm sure that most of the people believe in this.
I think we shouldn't obssesed with superstitions so much.Because it can effect our lives in bad ways :))))))))