You know what would be more depressing? Actually a pandemic which wipes of 90% of the humanity and by chance, leaving the current infrastructure of nuclear plants, armies, satellites at the hands of untrained or a very limited set of people. If you think we(humans) are the problems, just wait till one of these get out of control and destroy the locality in which it happens. It's depressing, yes but getting rid of humans actualy isnt the solution, not after all the "changes" we have made to the planet.