Who are we?

What's the meaning of life? Since the dawn of time, man and woman have been searching for the answer to this question. We came up with complex systems of deities in an attempt to explain how everything is connected. Scientists can define how some of it works, to a degree, and religions try to fill in the gap, albeit often with a bit of an agenda of their own. Sure, we want to know how it all works, but even if we're able to one day prove it all in the lab, the bigger and more pressing question still remains: Why? What's it all for? Why are we even here?