system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do all living creatures have to die, why can't we live for ever? Also why does there have to be a deterioration of the living being at some point in their life?
gpt
We don't have to. 

Google's Calico division is working on curing death, as well as Aubrey Degrey's SENS organization. No guarantees, but it's looking like it'll be between 20-50 years before we have something concrete.