This is the incomplete story. The purpose is to understand and know reality as it exists and not be having any unknown in life.
Till that the quest will be the objective of the imagination and free will that you are endowed with.
I have explained in detail here about the purpose of existence and role of human being.
Being organised and complete in himself and playing his role in the larger ecosystem of family society nation humanity and ecology.
There are infinite angles to look at his roles and all will lead to the above simple solution to be human.