We don't need weapons or viruses or other catastrophes to end our civilisation. We just need to keep on breeding. World population has gone from about 2 billio

We don't need weapons or viruses or other catastrophes to end our civilisation. We just need to keep on breeding. World population has gone from about 2 billion to almost 8 billion in the last 100 years. We're well aware of the limited resources of our finite planet, yet the only metric of economic success is growth. It's a pyramid scheme, and at some point, it has to collapse. Unless we expand beyond this planet, I suppose.