Anyway, Valentine is an environmentalist, and sees this culling of the human race as a good way to fight global warming. Which makes perfect sense, because if we don't do something about it, a bunch of people will die. The plot is similar to something an old-school Bond villain would try (Kingsman being a pseudo-parody of old-school James Bond, back when the series involved more jetpacks and less brooding). Sure enough, in Moonraker, Hugo "Best Villain Name Ever" Drax is a multi-billionaire businessman whose rather straightforward plan is to select a few dozen genetically perfect humans, stash them onboard a space station, then wipe out all of humanity with the power of orchids so that his band of beautiful people can repopulate the globe as a master race.
But these guys have plenty of company. In X2, Magneto briefly tries to kill all non-mutants on Earth. In Transformers: Dark Of The Moon, Patrick Dempsey's character decides to help the Decepticons lay waste to the Earth in exchange for ... what? A job in their organization? A mansion among the ruins? Hmm, we're starting to see another problem.