Would a smaller Australia be any fun?

Australia is an immense country, but most of it is arid desert or
semi-desert and the population clings to the coast. As an Australian
poet said, "It has a wet rim where the people clot / Like mud". So it
would be difficult to support a huge population. However, enthusiasts
for "sustainable development" think that its meagre 21 million are
already far too many for its fragile ecology. The national president of
Sustainable Population Australia recently argued that the country
needed a one-child policy to reduce the population from 21 million
souls to just 7 million.