Kings and Queens Who Went Insane Throughout History  When monarchs go crazy, it's not just a royal pain for them - it's a royal pain for everyone! Unhinged rulers can make all sorts of nutty decisions that screw things up for the rest of us. And if they're too batty to even do their job, it can create a power vacuum that other, less-crazy monarchs will try to fill. So let's all just hope that our leaders keep their heads on straight, for the sake of the kingdom (and our sanity!)