I do agree with most of what you are saying, CI. I'm trying to find a video that showed something interesting in regards to speed and a crash. I don't recall the exact numbers, but it was something like comparing 65 mph and 70 mph. They showed a semi pulling in front of both cars 100 feet away, and the stopping distances of the cars was going to be 105 and 112 feet respectively- so both were still going to crash into the truck.
The difference they showed was that the 65 mph car was doing 8 mph at the time of impact, whereas the 70 mph one was doing 35 mph at the time of the impact. And of course you are far more likely to be hurt hitting at 35 mph than 8.
The video was well done; with sort of a Matrix like effect of the narrator walking around and between the speeding cars.
All that being said, I still speed.