Personally, I am attracted to the idea [yes it may just be a conspiracy theory] that the world is ruled by plutocrats who somehow believe they will – when the shit hits the fan – be able to retire to Planet B. Or at least an island they own, or a mountain top somewhere. And there they’ll retire to a bunker and await the rapture, or some such epiphany that miraculously fixes everything and lets them get back to business as usual.