Originally Posted by Bonn1997
Do we humans actually do a "net good" for the world and nature or would the world generally be better off if humans were exterminated?
I don't think that humans do a "net good." Whether or not the world would be better off without humans is a judgement made based on what you believe the world and nature should be. If you go back to the early life on the planet the atmosphere was free of oxygen and full of a diversity of single-celled life. Then along came cyanobacteria which harnessed the energy of Sun, exploded in numbers, and polluted the atmosphere with oxygen which was toxic to every living thing on earth, including themselves.
Lynn Margulis wrote:
"This was by far the greatest crisis the earth has ever endured. Many kinds of microbes were immediately wiped out. Microbial life had no defence against this cataclysm except the standard way of DNA replication and duplication, gene transfer and mutation. From multiple deaths and an enhanced bacterial sexuality that is characteristic of bacteria exposed to toxins came a reorganization of the superorganism we call the microcosm. The newly resistant bacteria multiplied, and quickly replaced those sensitive to oxygen on the Earth's surface as other bacteria survived beneath them in the anaerobic layers of mud and soil. From a holocaust that rivals the nuclear one we fear today came one of the most spectacular and important revolutions in the history of life."
Had cyanobacteria been able to think and communicate back then I am sure that the following conversations would have been taking place between some of them:
CB1 and CB2 "Do you think that world and nature would be better off if we were exterminated?" To which the anwer would of course be yes, because they, like us, can only picture the world as it is at present so any disruption of the natural order must be bad, although that is what results in future diversity.
CB3 and CB4 "This talk about the need to reduce O2 in the atmosphere is nothing but a socialist scam. We are so small, there is no way that we could affect the balance of the atmosphere." Oh silly cyanobacteria with your head in the sand, how wrong you were.
would there be less suffering in the world without humans?
Nature is suffering. The struggle for survival is not smelling the roses and a walk on the beach at sunset.