Purpose gives life value. Most people would agree with that (false) statement without being able to properly explain what it means. To be fair, when its morally authoritative proponents speak of purpose in an existential context, they may mean one of two things. The intertwining intents make for a confusing narrative, so some untangling is in order.
The first, predominant meaning, is the common usage of ‘purpose’: instrumental to an extrinsic end. A good example this sort of purpose is the purpose of a humble noun.
“Cat” has an instrumental purpose. All it does is represent a certain class of lazy, mammalian parasites (who we love anyway). We could name the same category with a different phoneme and nothing would change. The sound and spelling derive their purpose from their use toward an end outside themselves.
The second, less commonly expounded thing to which moral leaders refer when they speak of existential purpose, is something more like ‘content’. The word then gestures at the richness of a personal story. On this account, Immanuel Kant and Idi Amin led purposeful lives.
Of course, lay-speakers often intend both meanings at once and also equivocate freely between the notions ‘instrumental’ and ‘full-of-content’. And lay-speakers cannot be blamed for the muddle. It is intentional.
We are all told, explicitly and implicitly, morning to night, from birth to death, that content comes of instrumental purpose, and one justifies the other. Our religions tell us this. Our politicians tell us this. Our employers and professions tell us this. And they all tell us that this mechanism gives value to existence.
The pervasive message of human civilization is: instrumental purpose makes purposeful content, makes value. But that is not how we work. Acting as an instrument may serve as a means of expression, but expression of motive (will to power) actually produces the value of our personal stories.
The endpoint itself makes no difference.
Nor does the report of our lives’ content capture their value. A slave may live a wild adventure from crib to deathbed and still, rightfully feel cheated. To think that the endpoint. and content generated in pursuit of that endpoint, themselves yield value, is itself a moral failure
It is all in the doing.