Superstitions

I myself think superstitions are just a bunch of bologna, they are a way for people to explain when times are just going bad and you aren't having very much luck, but strangely enough, I don't believe in luck either. If breaking a mirror got you sever years of bad luck, then I'm sure more than half of the world would be screwed. And also the one about a black cat crossing your path, does this mean people that have black cats all have bad luck? I don't see any decline in people buying cats just because they would be black. So to sum it up, I don't believe in superstitions at all and I never will.