A bike's wheel has a considerably larger diameter than a typical scooter's. It should be able to handle cracks and potholes much better, since the ratio of poth

A bike's wheel has a considerably larger diameter than a typical scooter's. It should be able to handle cracks and potholes much better, since the ratio of pothole-depth to wheel size means it can essentially climb out of the hole, whereas to a scooter, it's like hitting a wall (that the higher center-of-gravity human is then going to be flung over). That's not to say there's aren't potholes large enough to take out bikes, just that there are a set of potholes that bikes can ignore and scooters cannot. Nor is the above point that bike's don't have danger associated with them. (Largely, idiots in cars.)