Comment by mindthegap

For me: I grew up in Europe in times where the wall came down in Germany, a shared currency was established (Euro) and all European borders within Europe where suddenly passable without passport, visa checks, money exchange, someone judging you, etc.. Of course this caused other problems to solve, but the general feeling of freedom and being able to go some other country and even being able to live and work there was very liberating for me and motivated me to travel a lot (easy and relatively cheap in Europe by railroad). I don't want to argue whether or not this is possible for the whole world and what it would take, but it surely is a dream for me to live in a (global) society that makes this possible.