Remember when the Morbid Channel had stories like these that sent chills down your spine, things that actually scared you rather than pictures of gore, death, and blood? Back in the days where we didn't have all the "Morbid for (x)", those posts are ****. I miss those days. Happy new year guys.
TL;DR = Aliens discover mankind, but decide that they are too violent and primitive to be kept alive. The aliens build a nuke to destroy the planet only to discover that Humans have evolved into a peaceful race who has expanded in their solar system. However the bomb makes contact killing everyone on Earth; with the remnants of mankind sending a message: "We know you are out there, and we are coming for you." the regretful aliens can do nothing but wait.