That's thing really. I reckon many people do have similar foibles but hide it well. Like avoiding the cracks in the pavement. I absolutely had to do that well into my teens, then I suddenly stopped. It has been replaced by a need to even things up. If I tread on a lumpy bit of pavement I have to make sure both feet have walked on it an even number of times. As a 'grownup' I think I'm nuts, but my inner self gives me no option in the matter.