Is to figure out the purpose of life.
How do we do that? We learn to discern right from wrong, establish our truths. Form our beliefs. Write logic based on those beliefs. Develop behaviors based on that logic. Then we compare them with other people’s.
If your truth is different from my truth, how is it different? If I discern that one of your truths is more plausible than one of my truths, I believe you. I inherit your truth. I then form new beliefs based on your truths, write new logic, and develop new behaviors.
Continue this process until you feel like you have something to share. Share that something while continuing to refine your truths, explore new ideas, and write better logic.