New Zealand's birth rate has fallen due to economic insecurity.

That is a good reason to postpone having children, if you are planning to have them. But should New Zealanders have them at all?

The population density of New Zealand is around 50 per square mile (5% that of Massachusetts). A large part of New Zealand's area is wild. Perhaps its population is already sustainable, or at least in the right order of magnitude. If so, New Zealand is a fortunate exception, since the global human population is far beyond sustainable.