Should We Be Worried About Nuclear Weapons Anymore?

I always loved physics and high school and college, but i didn't think i was smart enough to become an actual physicist. But now i love, i love studying nuclear weapons. You know, i the last handful of secretary of defense said that nuclear deturns, as you know, is the number one mission for national security. So i think it's awesome to be a part of something so so important. Should we be worried about nuclear attacks any more? I mean, sina, some people might say itsomthing in the past. Ah, so in general terms, what do you say to people we were sceptical of that? I say, we absolutely need to worry,