When the environment is deadly, organisms choose not to procreate

In nature, many species will hold off from breeding entirely if the environmental conditions are poor. They know it is not in their, or their species, best interest to invest in children when the resources are not there. In fact, if babies are born and the environment degrades, some species will kill or otherwise abort their progeny to try again later. (see American Coot; Life of Bird documentary)

Americans are being told to have more babies. But some of us highly sensitive people sense the environment is degrading or is degraded - so we will not breed.

Considering the natural state of many organisms - to not breed when the environment is poor - isn't it fair to conclude that humans will not breed if they too lack resources or a safe environment?

If so, a declining birthrate indicates a major environmental problem.

("environment" can be nature or not; in this case, it just means your surroundings).