Thanks to Mensch for sending this along.
This is the End of History - thousands of years of human civilization have led up to this one indelible endpoint, and now it's past. The purpose of the combined life-toil of the tens of billions of people who have walked this earth since the Dawn of Man has finally become clear.
Life will go on, I suppose, but now that humanity has officially entered its post-historical age, it is difficult to see a point to all of it. We've reached the peak of the mountain, and there's nowhere to go but down the other side.