Even if the climate change denialists are right and humans and the fossil fuels we rely on are not the cause of climate change, continued reliance on fossil fuels is not likely to reverse the way the climate is heading, so it’s a good idea to move to low-carbon alternatives.
Even if fossil fuels are a more abundant resource than we think, they are still finite, so it is a good idea to move to renewable alternatives.
Even if fossil fuels are more abundant than we think, they are nasty polluters responsible for lessening the air quality of our planet. People around the world suffer respiratory complaints galore because of pollution from fossil fuels, making it a good idea to find an alternative.
Even if fossil fuels can be made less polluting, they remain a finite resource.
Even if fossil fuels can be made cheap and clean, their concentration in a small number of nations is a constant source of geo-political tension that the world can do without.