There is no sign of any long term slowing in the rate of growth of the world population. If population increases by 25-50%, one of the possible outcomes will be substantial structural change in the global societies. That would be a stable growth model as opposed to major instability and conflict. In a stable growth model, of whoich there are a number of variants possible, all or most would seem to involve further movement toward the emergence of global values and a global society. That, in turn would imply substantial convergence of some major cultures, including possible diminishment of some, but also a transformation of society due to greater complexity and greater requirement for higher degree of coordination in the use of resources, control of population and amelioration of environmental change.
In this general outlook - that is not more than a few decades out, that some intellectual effort is devoted to considering what that converged, more complex, one world society might comprise and to try to consider the values it would tend to endorse. Or should we just stumble along blindly and so which culture will win?