Isn't every nuclear bomb an existential threat to all human life? How can one say there are no existential threats while countries people consider "The Enemy" have enough nukes to kill all human life multiple times? Also global warming is an existential threat. It's really telling how little people care about the world's problems not seeing their very own existence endangered.
All true, I meant threats in conventional military terms which our military and public rhetoric are all centered around.
In the case of Global Warming its happening to slowly for most people to perceive it as threatening. Even though it massively is.
For Nukes thats just a given nowadays, humans have a remarkable ability to adapt to constant threats. Not in the sense of being able to do something against it but to know it exists and not be terrified every single day. So many things can threaten human life that exist around us and yet we do not get scared after some time anymore atleast not constantly. Look at people living in Australia the entire ecosystem is basically a giant threat to anyone living there. Look at people living in earth prone regions of the world. People adapt and keep on living their lives. This is a fundamental human skill.