If we had a specific purpose for existing it would be because a sentient god created us with a purpose in mind. And since we don't have the means to know if there is a god, or what it would be like, or what it might want us to do, it's safe to assume that more likely than not, we have no purpose. Otherwise we would have been told it.
The only "instructions" we have are those buried in our physical bodies giving us the instincts to live, reproduce, alter our environment, etc. |