Mother nature always wins.
There was a show on television a while back that talked about what life would be like without humans, as if one day we just disappeared. First it suggested our house pets would die or be eaten, and electricity would end once the hydraulic power plants finally failed. It suggested bugs would get into our houses that we once took such care to keep out. After bugs, plants would overtake the spaces and slowly but surely a combination of rain, invasive and powerful plants, and the traveling of animals would open our homes to entropy like never before. Mother nature always wins, despite our best attempts to kill all life with atomic bombs and build strong walls and create new pesticides… Mother nature always wins.