It’s not human rationality, it’s cold, hard economics (scoped to renewables and storage uptake). Climate change is already happening, and there is nothing you can do to stop it immediately, just as you will get killed stepping in front of a freight train. You can only build systems that can attempt to outrace it to slow it down (various efforts to achieve net zero in a domain), and then eventually reverse it (an efficient, scalable carbon sequestration solution to existing atmospheric carbon load, powered by clean energy) over the next ~100-150 years.