Being both interested in science and an outdoorsy person, I write about climate change quite a bit. Put succinctly, I am convinced that it is real, it is anthropogenic, and it is dangerous. With Vulgarmort expected to pull out of the Paris climate accord, I am pig-biting mad. Even most large U.S. corporations currently support the Paris accord.
Worldwide, the prices of renewable energy resources are lowering- in India, the price of solar generation is now undercutting the price of fossil-fuel generation. The prospect of lowering humanity's carbon footprint is becoming more and more likely with technological innovations. Meanwhile, Tweety Amin has made the renewal of the coal industry in the US a plank in his platform, even though that will never happen given the low price of natural gas (which, while better than coal, should be phased out as well).
Now is not the time to double down on propping up the fossil fuel industry- we need a 21st Century energy policy, not a 19th Century one... By pulling out of the Paris accord, the United States will cede political, technological, economic, and even moral power to other powers, be they the European Union or China. The only beneficiaries of such a policy change would be the fossil fuel oligarchs and their pet politicians.
In Switzerland, the first commercial atmospheric carbon capture plant just opened. There is an entire family of industries that can be developed to mitigate the climate change conundrum- it just requires political will and proper funding priorities to make it happen... and I don't think that the United States will be at the forefront of this revolution. The plane won't leave the ground, because we won't always have Paris:
The irony here is that even the oligarchs would benefit in the long-term by dropping their short-sightedness and reactionary politics.
UPDATE: Tengrain's take is that Trump wants to pull out of the Paris climate agreement in order to help Russia's petrochemical industry- I guess Moscow grifting Trump's Paris activism.