life
noun
1.
the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.
2.
the existence of an individual human being or animal.
1 word:
Reproduce.
If you think about it, all we were born to do was to find a mate and make babies. That's what all species do. It's what we're all supposed to be on the planet for.