Comment So here's an actual scenario (Score 1) 74
Eventually a demagogue comes along and organizes the masses into an army. We have a massive war that makes world War II look like a slap fight.
Sooner or later a bunch of religious lunatics get their hands on nuclear launch codes. The missiles on to maintained but they can be launched and it doesn't matter where they hit there are so many that they can completely fuck up the environment making it uninhabitable for the human race. You could basically set them off in silo and it would still Doom us all they are so powerful and so numerous. We have of course while things were collapsing somehow come up with the money to build more nuclear weapons.
Anyway those firecrackers go off and a bunch of religious lunatics celebrate the Apocalypse because they misread a holy book and we all die. In 300 million years raccoons evolved and take over and do the whole thing again