Nature is the earth's natural state in the absence of human interference.
The way the world would exist if man didn't mold his surroundings to best suit him. I value Nature because without it life would not exist on this planet. Nature provides an incredbily complex, self-sustaining system, that could allow life to continue orever. I believe pollution is a problem that technology will solve. Future advances will allow manufacturing to continue with minimum production of hazardous wastes.