Ok, I think I see where there is a misunderstanding with the deer issue.
The problem is that a deer is a living, thinking, moving creature. So when it darts out into the road is based on what it decides is a good idea. Meaning to us as drivers it is something random. Let's take the random factor out of the equation.
Somebody suggested potholes. Good, because they move around a lot less than our deer do.
Basically like so many other road hazzards, they are based on number per km, so increasing speed does not decrease the number of potholes you encounter.
And to clarify what others have been trying to say- I don't think any body is trying to make the case that doing 120 in a 100 zone is safer than doing the speed limit. I think what is in dispute is whether it is safer to do 120 or 80 in said 100 zone.
Edit- and let's cut the name calling, OK. It's one thing to call some random person you saw on the street an "asshat." It's quite another to disrespect your fellow posters.