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?
This question is highly subjective and what I think others may not and vice versa. Most people will probably say the purpose of life is to recreate and that makes sense from a biological standpoint. My view is different and I think the purpose of life is to live and experience as many things as humanly possible. But that is how and why I live not everybody will agree of course.