When they start comparing reality to sci-fi apocalypse movies then there is a problem.
And yet the ability to tell stories - to take a premise and run a mental simulation to see the consequences - is what allows you to plan your actions. Even your ability to walk depends on it. There's no difference in principle between "if I cross the street without looking both ways, I might get run over by a car" and "if I build autonomous weapons, they might turn on me". Heck, the case could be made that all the fictitious stories about a nuclear apocalypse is what kept it from happening, since they made sure no one was the least bit uncertain about the results.