We haven’t figured out exactly how our consciousness came to be — how we evolved into sentient creatures capable of thinking long term, discovering realities about the world around us, and even asking about our origins and afterlife.
There are religious apologists who will say that our consciousness can only be explained by the existence of God. No other answer makes any sense.
If you watch around the 6:34 mark of the video, my face makes an appearance. I have no idea how he got my desktop photo, but there you go.