Logic or superstition?

This just popped out of my mind. Which do you believe? Logic or superstition? On this subject, me and my girlfriend go on different ways. She highly believes in superstition, keeps on looking for signs, and even read and base things through the horoscope. Though she said that it only serves as a guide for her, most of the time when we're talking, she would normally base the things and what she said on beliefs. I, on the other hand, never believes in such things. I believe in reason and that everything happens for a reason. I don't believe in coincidence and though I believe in fate, I think that it just doesn't happen for anyone, our fate is the result of our actions and decisions. As we keep on talking, I realized that most of her beliefs actually came true. She let me read a magazine that she just bought at the start of the year and found out that those things that are being said on our zodiac signs are true, well, not all but almost. I now think that it can serve as a good guide for things to happen in the future. On your part? Do you believe in both? Or only one?