To compare the road environment (if that's what you're doing, I may have misunderstood) to Mother Nature is unreasonable. One is the result of Darwinian evolution and physical law, and the other is the product of reasoning human beings. A better comparison would be with the workplace environment, or the railway environment, or the air traffic environment. Screaming at Mother Nature for making poisonous mushrooms might be self-defeating, but screaming at Pret a Manger for putting them in sandwiches is probably quite justified