What is the stupidest apocalypse you can think of?

[Florestes]

A divinely beautiful race of female only aliens migrate to Earth. All men who have tasted heaven can't bear to be bound to earth. Involuntary, self-inflicted species extinction within one or two generations.

 

[SternenklarenRitter]

The entire world population becomes convinced we are living in a virtual reality game. In an attempt to wake up, we turn the planet into a nuclear wasteland.