The idea of preserving individual identities on a small planet with 7 billion people is an infantile notion. Individualism has become a weakness as a species, and has kept our maturity from equalling our technological evolution. The choices are: we shed 5 billion souls through tribalism, famine, disease, and general break down of our ecosystems, or we grow up as a species and put survival over profit, and individualism. We will probably suffer the first option before we chose the second!!