This is an emotive issue. With fuel poured on the fire by the simplistic soundbite "Speed Kills"
That soundbite is clearly open to question.
Drive down a road at 20, 30, 50, 50, 70, 100, or 200 MPH without having an "accident" and there are no victims.
Drive down the same road , it really doesn't matter where it is for the sake of this point, at 20, 30, 50, 50, 70, 100, or 200 MPH and have an "accident" and instantly you have victims.
I agree fully that as the speed increases the consequences to the victims are likely to be much higher but the above does illustrate that speed on its own is not a problem.
What has happened in recent years is that a direct correlation between speed and the likelihood of having and accident has been made. Basically the arguement here is that the faster you go the more likley you are to have an "accident". This is the point that is more subjective and many believe their is little or no scientific basis for that to support the correlation.
The equations are simple.
Speed + accident = victims
Speed + no accident = No victims
no speed + accident = victims.
If you could eradicate the accidents from the worlds roads you have no victims.
I'm not saying that everyone should drive everywhere without limits purely because it is unrealistic to remove "accidents". All I am saying is that there is more that just speed involved when it comes to producing victims.