It would have been more accurate for me to say that we are not programmed for unrestrained or unlimited growth in our numbers, in our population.

Growth gives us "more", which is what we use to solve problems, problems which were created by the previous "more" not getting to the root of the problem.

And the roots of our problems have been almost completely obscured due to our cognitive limitations in the face of extreme complexity.

In biological systems, of which H. sapiens is an example, decline (increasing senescence) and termination (death) always follow growth. Life continues because prior to termination, the process is renewed (in our case through sexual relations and birth).

Civilization believes, due to the important particulars being obfuscated by complexity, that decline and termination will never come. In reality, the decline has been happening for millennia, and termination is not only inescapable but will be rapid.

We have climbed so far up, and have so much further to fall during a collapse.

We have no process, designed from the top-down or inherent from the bottom-up, that provides resilient renewal for our societal structure for the inevitable end.

Maybe "resilient renewal" is a better term than "sustainability".