Mortality. It’s the primary reason we don’t live forever. If not for our mortality, the number of years each of us would have to roam this earth would be as infinite as the sands of time running through the earth itself. When extraterrestrials eventually make first contact with us within the next twenty years, the first glaringly obvious thing they will notice…is that we die. They will come to our planet with sinister intentions and they will immediately have the upper hand because we die…and they don’t. It’s a simple as that. And it’s all because of our mortality.