We see a reflection of this willing suspension of disbelief in the absolutely baffling continuation of faith that the UN has anything of substance to offer on any topic anywhere, much less in the tremendous leap of logic that proclaims this tendentious, sclerotic, bureaucratic body of elitists is a model for world government. That it very well may be but it isn't a government anyone sane would want to live under.
But one can understand the sort of naivete that reasons, "wouldn't it be great if there were no wars? Let's see, religion causes wars and so does nationalism. Let's do away with them and there will be no wars." In a seven-year-old this sort of thing is charming, in an adult, merely alarming. In theory giving up the nation as a focus of loyalty frees the individual to be a citizen of the world; in practice that individual merely transfers that loyalty not to all of mankind but to the nearest tribe in which he or she can claim membership. For some that tribe is the very elite that lays claim to the right to rule. It is still, however, a tribe, and whatever it claims that turns out to be bad news for everyone not in it.
Well said.