Romans once said the same thing too. They thought their society would never collapse.
We've already had societal collapse in the US. McDuffy Riot, Rodney King Riot, Hurricame Andrew, Hurricane Katrina, the 2020 Summer of Love, lawlessness in a number of cities, etc...
Heck, it was Sherman who burnt Atlanta to the ground.
Anyways, I'm not worried about a nuke strike. I am worried about another hurricane. I recall the looting that happened after Andrew. I witnessed it first hand.
The US can go to hell and the rest of the world will suffer, but go right on by and survive.