nuclear war and climate change don’t share the same path of humanities destruction.

Not nuclear, but don’t underestimate how much greenhouse gases have been released by blowing up oil refineries in recent wars. I’m not saying it’s the same path, but they are connected.

Humanity is pretty good and being able to predict things which will negatively effect us.

True, but not at convincing others to stop doing it, or accurately predicting whether we can convince enough people in time to avert disaster.