The issue with population exists not only upon the level of the resources required to feed us all but also upon our collective strain upon other aspects of the World.

A big aspect of that strain exists due to an inferior existing paradigm reflective of the human-centric perspective that the time, place and way for humans is 'every time, every place and every which way'.

This conflicts greatly with a glance at many other species. Through necessity they set their boundaries, their territories, their dens and networks.

Given half a chance, just as with humanity, they would spread over the surface of the Earth like termites over and within a juicy block of wood. The difference is that we as humans supposedly know better.

And when it comes down to it, the singular main reason why we as humans accept that population growth is a good thing is because 'it supports the economy'.

An economy founded upon a tried, tested but imperfect model where population growth is necessary so as to sustain it.

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There is more that could be said for the above but I've gone on enough about it for the moment. I would like to get back to agreeing that population is not the 'only' factor to be considered. There exist a spectrum of possibilities - technological, even biological, means of bettering the present situation.

However when thinking of long term sustainability we need to look beyond the nature of supply toward the nature of demand.