No, I don't believe in superstitions. Most of the time, when I see people talking about superstitions, I always find it easy to conclude Ignorance as their problem. Ignorance will make you believe anything even when it is to your own detriment. I don't believe in superstitions because a bit of them cannot be explained via any means; scientifically or naturally. I think people need to be informed that some things are naturally bound to happen, even if you don't attach any supernatural connotations to them.
I think when people start to think in this way, people will enjoy the freedom of mind, and they will have the confidence to accept whatever fate comes to them. For instance, there is every possibility that something will not happen, even if there is 99% assurance that it will happen. So, the fact that the possibility is fulfilled does not make it a product of any supernatural thing.