It's not so much whether someone has hit anyone - speeding laws exist for a good reason to protect other drivers, pedestrians, cyclists, etc. There's a good reason that school zones are 25 mph for survivability in the case of a car hitting a pedestrian (especially for small children).
There's certainly issues with speeding laws and enforcement, but at the end of the day the US is so car-centric that removing someone's license for dangerous driving can severely impact their ability to get to work, etc.
There's certainly issues with speeding laws and enforcement, but at the end of the day the US is so car-centric that removing someone's license for dangerous driving can severely impact their ability to get to work, etc.