"Speeding," of itself, is not a threat to safety. Failure to adapt to the conditions of road and weather, failure to yield right of way correctly, following vehicles too closely, operating your vehicle when unable to perform/make decisions correctly are ALL responsible for more accidents than is the speed of a vehicle or vehicles.

"Speeding," however, is nice and easy to measure -- very concrete and hard to dispute -- so it makes a convenient benchmark with which the government in question can levy more taxes from the community. Policing all of the other activities that breed accidents would require a LOT more time and effort on the part of police forces.

I have never reported a speeder to the police. I have, on a couple of occasions, reported those tail-gating or driving in a manner that suggested they were inebriated in some fashion.

Not much of a dilemma for me.