The conviviality and comradeship expressed in a human get-together cannot be simulated nor synthesized. It is a product of the multivariate social interaction of people with so many different points of view and experiences, that whatever commonality brings them together, the end result is a Brownian soup of interplay. Whatever we may be, as humans, we are a social species, starting with the act of parenthood, all the way up to the formation of nation-states. It is our interaction and interlocking that built the greatest works of humanity... and, occasionally, wrought our worst upheavals.
The world we live in now, a world our ancestors would no doubt find exhilarating and confounding, is a global village, where the barriers between continents are breached as easily as between localities. Our planet is girded by highways of earth, air, and sea; the rarest and most precious things, the greatest sites, the most palatable foods, are now close at hand, rather than longed for at titanic distances. Where we cannot go physically, we are not barred, flinging ourselves across wires and into the depths of space, to reach across the breadth of our home, touching others with words, and pictures, and sounds.
Even so, great gulfs remain, made not of stone or sand or tectonic stress, but human gall and greed.