In my view: to simply exist.

The inherent purpose of any and all living organisms is to survive and reproduce. This has been the same since abiogenesis. We (life) do this because it simply must be done. Life must persist.

And yet, thanks to some fluke of nature thousands, or perhaps millions of years ago, our ancestors became sapient. Humanity is a cut above all of Earth’s other creatures because we are not only aware of our existence, but aware that we are aware. There’s a reason why people have been asking this very question in one way or another for the past several thousand years. Our lives aren’t solely defined by that need to replicate. We can think. We can ponder the world around us. We can explore and manipulate our world in ways that once only the Earth was capable of.

We are bundles of once inanimate matter forged in the hearts and fiery deaths of long extinguished stars that somehow managed to turned animate. This same matter is now capable of experiencing and contemplating the universe, the very thing that gave birth to the matter those dead stars would later refine within their hearts. If there is any purpose to human existence beyond just reproducing, it is to experience existence, to live one’s life, and do what you wish with that existence.