One can imagine an immense warehouse full of trillions of rabbits whose brains are hooked up to stimulators that intermittently produce mild levels of rabbit gratification. What each rabbit gets is not that great, but there are so many rabbits. Thus, utilitarian revolutionaries could, in principle, justify destroying our world in order to realize their dream of building an enormous rabbit gratification factory.
Oh, yeah, I can imagine that. But they'd use virtual rabbits instead.
