I remember a comic book: Turns out earth is a farm for humans who are grown for their eyebrows which are of high value in making coats for an alien culture. We're only a few thousand years away from harvest.
But that's not the purpose I'm talking about. What is our purpose to ourselves in our own life?
This is tied to what we value, each conditional value dependent on another and finally an absolute one - something we value inherently, in itself. Something that, all other conditions being equal, is more valuable, better than, than its contrary - to us.
We can follow our own trail of conditional values to learn that which we value absolutely.
I would guess that for you we would likely quickly end on either truth or knowledge.
I guess I could come up with a possible list, but these are just speculations. We have no way of knowing that because we have no way of knowing what the purpose of existence is, and I mean the whole universe. Even talking of any purpose is a speculation.
This is tied to what we value, each conditional value dependent on another and finally an absolute one - something we value inherently, in itself.
What absolute one? Purpose seems to be what people use as an excuse to justify their acts.
Something that, all other conditions being equal, is more valuable, better than, than its contrary - to us
So, it's all a human construct. It's all about us. It's narcissism, egotism, exaggerated self-value. Self-deification.
We can follow our own trail of conditional values to learn that which we value absolutely
Relativism. In the end there the only "absolute" is really relative, i.e. how it relates to us. Thus, in the name of the almighty purpose, we justify what we do for us and in our name. But if you strip it of fancy rhetoric, the purpose of the bigger fish is to eat the smaller fish. Not very exalted, is it?
Ask yourself what is all this about? And if you think you know, ask yourself how do I know that? Let me help you: we don't know. We just exist. That's about all we know. The rest is filled in with our fancy.