While aliens (and the government!!!!!) will always be there to kill us, we have for generations used our cold dead hands to clutch onto whatever silver lining we could sew into the dark cloud of our everlasting mortality. They will come to our planet with sinister intentions and they will immediately have the upper hand because we die…and they don’t. 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. 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.
It’s the primary reason we don’t live forever.