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True, but as someone who considers myself a safe and considerate driver, my opposition to strict enforcement of speed limits comes from this: when the police can easily enforce something numerical, they optimize for maximum revenue and devote nearly 100% of their traffic enforcement resources to speed traps.

This leaves all manner of unsafe drivers free to proceed with making illegal and unsafe maneuvers on the road without a snowball's chance in hell of ever being prosecuted for it. In most North American jurisdictions, what do you think the ratio of speeding tickets to tickets for all other traffic offenses is? Do you think someone doing 55 km/h in a 50 km/h zone is more dangerous that the person who always plays chicken with left-turn traffic by blazing through the tail end of yellow lights at intersections? The person who stops traffic to make an illegal left turn in the same place every day? The person who doesn't turn on their lights on the freeway driving 100 km/h at night when it snows?