There used to be a thing called "Moore's Law of Mad Science":

"Every eighteen months, the minimum IQ necessary to destroy the world drops by one point."

Nowadays it is dropping much faster. At a certain point, the de-facto IQ needed to destroy the world will be low enough that someone can do it while they're having a psychotic break. There are millions of schizophrenics worldwide. Are you sure you want to roll those dice?