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So you're absolutely right that we should be talking in terms of cost-benefit with all the parameters you mentioned (biodiversity, human welfare, economy) but you know what will be the first to protest against that? Greenpeace.
Because this means we would need to bring back to the table the topics they barely managed to remove from the public discussion as "filthy" - GMO and nuclear power. Which they don't like because they started believing their own propaganda.