OP, let me give you a different perspective on it: If you have back problems like I do, every bump or pothole is like a knife to your spine. If you take them slow enough they are like a pinch to your spine. The amount of jolt they generate to the back is related to the speed you take them at. And something that people without back pain do not often understand is that many times once something aggravates a bad back the pain stays with that person for several hours, and sometimes even until the end of the day and they have have time to lay down for several hours. There is a reason why people with severe back pain have a high rate of suicide. This is some very painful stuff we are dealing with.
When I buy a vehicle the number one concern is how well it rides over bumps and potholes and isolates the bumps from the road for me so my back is not abused any more than it has to be. I also chose vehicles with tires rims that are small compared to others so there is more rubber between the rim and the road to help absorb bumps in the road.
Slow down for a speed bump, you bet you, that is me. And while I am doing it I am cursing the bureaucrats that put it there. I know there is a need to keep traffic at a slow speed on streets that kids play on. But there are smart speed bumps that do not jolt a slow vehicle. But no one around here will shell out the extra cost of them. They just put in the cheap speed bumps, and torture everyone with a bad back.
So the next time your behind someone who goes super slow on some kind of road bump, maybe you could consider that that person might have serious back pain and is just trying to make it through each day for their families sake, and that speed bumps can generate a lot of pain for some people if taken fast.
I understand your rant, and I hope you can understand mine.