Obviously life got started. The proposition that it is possible for protoplasmic life to get started surely involves beating the odds. Once started, life’s purpose is to proliferate. This is so obvious it’s completely missed – other guesses as to purpose proliferate instead.
Protoplasmic life intends to spread out – its desire is to inhabit every space it can, even by making uninhabitable spaces habitable. Since humans are the only species capable of space travel the role in life’s purpose humans are to play should be easy to see. This is not teleology because of its iffy nature – the whole thing could backfire. Life’s risky shot at refraining from dealing with the humans as a plague species is due to the destiny hoped for them – to carry life out into the universe.