As the first and possibly only species to become sentient and to truly control our species' destiny we have the unique opportunity of asking ourselves. What should we do?
I don't mean what is your individual purpose.
What should sapiens, humans, terrans, as a whole, be aiming to do?
As a human, we should be aiming to be a creature that innovates through our knowledge. We should be able to invent new things that can help all of the rest of humanity in general. We should cooperate and help each other to be able to improve faster. Humanities purpose is to live. While living we should make the best of it by doing things that can help the whole society to have a greater world.