In wildness is the preservation of the world. Roads facilitate resource development. They fragment habitat and create artificial edges, eliminating wilderness-dependent and forest interior species. They create erosion and mass slope failures that clog streams. They facilitate air and noise pollution.
Road dust covers plants, reducing photosynthesis.
Road-cuts disrupt groundwater flow patterns. Road-cuts and road shoulders are avenues for noxious weed invasions. Precipitation evaporates from road pavement instead of percolating into the ground. Roads provide access for slob hunters, poachers, off-road vehicles, and litterbugs. In short, in most situations wildness and roads are mutually exclusive.