For what we the humans born??:)
There is no reason. There is no destination. We're a ridiculous random product of an absurdly complicated process called "evolution". So: Just enjoy life while you can. Be nice to your neighbors. Help other humans. Do whatever feels right. And try to make the world good for everyone.
We were created to mine gold and serve as slaves. That was hundreds of millenniums ago. At this point we've run rampant and we now make our own destinies.
Because God was bored.