We were not the first and if we vanish we wouldn't have been the last life on Earth that would be destructive. https://en.wikipedia.org/wiki/Oxygen_Catastrophe

We were not the first and if we vanish we wouldn't have been the last life on Earth that would be destructive. https://en.wikipedia.org/wiki/Oxygen_Catastrophe https://en.wikipedia.org/wiki/Oxygen_Catastrophe Such apparently is life on Earth. We are not special.