Do you feel a slight twinge of excitement when you notice your odometer rolling over to a large, round number like 50,000 or 100,000, as if it's a significant event?
I do, too. Why? It's really quite meaningless. It's certainly no more significant than any of the other miles rolling over.
I think it's because we have to be somewhat selective in the mileage changes we celebrate. If we got giddy every time the odometer changed, people would think we were fucking nuts.
By the way, I did this post in my underwear.