Such an investment would almost certainly skew the probabilities in the other direction. So far we know of exactly one species that has both taken the initiati

Such an investment would almost certainly skew the probabilities in the other direction. So far we know of exactly one species that has both taken the initiative to develop weapons that could exterminate humanity and has made threatening gestures with said weapons: us. If the human race gets destroyed by mega-weapons, it'll almost certainly have been a human that pulled the trigger.