Within the next hundred years or so when our ozone is pretty much fully destroyed and global warming melts the ice caps.
When the Sun dies out, millions of years from now.
when the aliens come to visit us and see how we are killing ourselves as a society. they wont even have to lift a finger....
okay nice aliens. they wont hurt us. instead they will pop a bag of popcorn and watch us destroy ourselves as we seem to be doing right now lol
On a Thursday ;-)