Actually, we do. That’s why things are so bad right now; rational reality is merciless to those who try to pursue the irrational.
But since they’re irrational, they’ll continue to pursue it despite the already obvious consequences. Epiphany comes too late to change anything. So we live in an irrational world, i.e., where the irrational make the important decisions, and a sword hangs over our heads for failing to stop them from having their irrational way.