Don't you see? Mother Nature wants us dead! Our time has came and gone, the era of the human is long past due. We should be dead, but our awareness, intelligence, and technology, that increases everyday, is keeping us alive. It's all apart of evolution. we come, we live, we go, life moves on for the world. We're the only species that has negatively gone against the grain of time and nature, it's not good!
This time it may be the flu. Next time it's something else, and another thing, and another..until we're all gone, and nature goes back to equilibrium. We've royally pissed off Mother Nature, infesting her, disgusting her..she's fed up, she's sending out her last alliances of troops to kill us all.
Take the Black Death epidemics in the 1300's and 1600's..one of natures closest attempts to peace..killing millions and millions of people, nearly 1/3 of the world's population at the time. And it's natural. species come and go each day, as they should.
It's like 'I am Legend', the answer (to cure cancer [sorry for the rhyme]) led to our own destruction, minus a few exceptions. If that doesn't kill us, technology will. In I-Robot, robots surpass humans in the food chain, we're no longer alpha.
Book of Revelations forshadowed it, so did Nostradamus. We shouldn't fear the end. The end is near..and approaching fast. We can't outrun it for much longer..maybe a few hundred or thousand years..but that's not saying much in the whole chapter of human beings.
Oh, and aliens taking over the earth is actually a plausible concern..if we hang around much longer, we'll need to put that on the list of things to worry about. Aliens, Zombies, Killer Robots, Mutant and indestructable viruses, solar flares, chemical poisoning, it could all happen.
So, low and behold..my Doomsday toggle.