If an idea lacks enough merit to be passed on without being force-fed from an early age, it probably deserves to be forgotten. Awareness isn't passed along in our genes. Often, we arrived at this conclusion independently and without support from friends and family. The concept of voluntary human extinction has a life of its own. It's an idea whose time has come, though it may be a little late.
Human existence is fragile for quite a few reasons.
Here are 20 ways the world could end .