Everybody loses their sense of morality instantly and starts looting and killing the crap out of everything.

So basically Raiders, but slightly less stupid.

Just like Albert Einstein once said “I don’t know what World War III will be fought with, but I know what World War War IIII will be fought with, sticks and stones.”

^^While both of the above comments are true, I actually meant which biome/environment usually depicted in nuclear post Apocalyptic fiction would be most likely to occur. Nuclear winter (like in the metro series) or a desert (like in mad max)