
Lucifer's Hammer is a post-apocalyptic science fiction novel by Larry Niven and Jerry Pournelle, first published in 1977. It was nominated for the Hugo Award for Best Novel in 1978. The story details a cometary impact on Earth, an end to civilization, and the battle for the future. It encompasses the discovery of the comet, the LA social scene, and a cast of diverse characters whom fate seems to smile upon and allow to survive the massive cataclysm and the resulting tsunamis, plagues, famines and battles amongst scavengers and cannibals.
Your comment isn't cynical, it is more akin to a lucid perspective of a set of threats.
The economy and threats to democratic process are more worrisome -- and yet at the same time, much more within our capability to fix than an asteroid strike.
For a lucid fictional presentation of an asteroid strike, I recommend "Lucifer's Hammer" by Niven and Pournelle.^1
