No need to worry... you can't do anything about it anyway.
How will humanity end? The possibilities are literally endless.
Civilizations? ... Global extermination? ... Planetary Annihilation?
Extreme global warming ... Extreme global cooling
Volcanic winters... Massive earthquakes ... Crop failures
Tornados, Floods, Tsunamis, Droughts, Plagues, Hurricanes.
Man made... wars, contaminations, exhausted resources.
Artificial intelligence that becomes its own species, eradicating humans.
Earths atmosphere is ripped away,... Solar radiation exterminates all life.
Alien life forms take over the earth enslaving or exterminating humanity.
Planet killer asteroids causing mass extinction (another historical repeat)
Destruction of our sun, the planet or the moon.
Black holes absorb our solar system.
Ozone depletes and we all burn up.
Deadly viruses from space via asteroids.
Mutation of the human genome pool.
Man made viruses wipe out all but the powers to be and politicians... wait, where's the justice in that?
Earths magnetic poles reverse or cease to exist, worldwide catastrophe.
Or we simply refund police & military and 20% of the population wipes out the other 80%... or nuclear war just kills us all.
Told you... no sense worrying...
Now that I've brightened up your day... enjoy existence.
