Most speed bumps/humps these days require you to go below the speed limit to avoid damage to the car unless you're driving some jacked-up monster with loose suspension.

You haven't encountered many of these short speed bumps. The longer ones are like that. But no short speed bumps is safe to go over at anything but a crawl.

Most speed bumps in the usa will fuck up your car, or at least give you a really bad day if you hit them at anything over 3mph. There are milder versions with names like "speed pillows" that let you go a little faster, but even those don't let you go the full speed limit.

In a perfect world, sure. Problem is, we live in reality.

Idk...a lot of speed bumps I've come across are crazy violent. They aren't sloped enough and instead project upwards very abruptly.

Obviously, not every speed bump is the same, but still.

I really would prefer for hidden speed bumps to not exist when I'm riding my motorcycle, for example, where that can be a rather dangerous "feature" of the road.