It's not. Oil rich countries like Russia and the US have all to win from global warming. Russia is expected to become the biggest grain producer in the world if the planet gets hotter. A lot of their territory will get unfrozen in the process. Why do you think Russia's big oil oligarchs have sponsored so much anti-climate propaganda. They get rich in the process and Russia becomes a bigger pawn on the global economy market. Damn those African and Middle East countries that get roasted in the process. They're basically losing competitors on the oil market.