Nature is made to be shared. To be successful in gardening or agriculture requires to share with nature, to leave a piece of land totally free for nature to compensate and rebalance the overall environment's energy system and aura of the entire neighborhood.
If however an entire region is mono culture like in so many western countries - then the entire country's energy system in nature is out of balance. The result then is an artificially man-created need for herbicide and pesticide.