I agree that the human need to belong to a group will prevail–it is evolution's gift to humans that has allowed us to become the dominant species on earth. The conflict, however, remains between our need for social belonging, which frequently inspires us to altruistic behaviors that do not directly help us as individuals, and the individual drive to selfishly do what best helps us get ahead.
This conflict' also evolution's gift, has played itself out throughout history in ways that have caused us to sacrifice ourselves to support our tribe, but be eager to violently destroy those from other tribes who threaten us. When the world was large and there were only a small number of nearby tribes with which we could disagree, this more or less worked out. As global becomes the new neighborhood, this is a recipe for endless strife.
If humans are to survive, we have to learn to expand our notion of tribe. If we cannot, we doom ourselves to constant conflict that will likely destroy us. As millennials inevitably rejoin society, let's hope they are able to continue to have a more expansive sense of who "we" are.
Thank you for informing us that we are not as smart as you are, and
giving the additional gift of reading minds.
Your criticism is a reflection of you, not Libertarianism.