"What the fuck is wrong with people?" The bottom line is imaginary beings. Humans build a model of the universe inside their brain, and upon physical maturity, move into the imaginary world. Bullies always win because they don't follow the rules of non-bullies in any civilization (city-based society). Cities are inherently consumptive (extractive), and simple numbers mean that Extraction overpowered generosity to the environment. Regardless of all of the other reasons you listed, the bottom line is that humans are committing species suicide because we take more resources than we contribute to our environment and offspring. Civilization isolated city humans from the feedback mechanisms of the natural world that would have limited our destruction (until now).
Economic policies have been built upon this isolation in order to increase money flow (resources are always secondary to money as decisions are made). The world doesn't want to be saved; it wants to be rich.