The hand wringing over birthrates is ridiculous. Until we colonize the stars, it is impossible that human population could grow exponentially forever; birthrate

The hand wringing over birthrates is ridiculous. Until we colonize the stars, it is impossible that human population could grow exponentially forever; birthrate decline HAD to happen sooner or later. If we have reason to believe that continued population decline could lead to the collapse of civilization, certainly hand wringing is warranted. Such a collapse currently would require blindly extrapolating current social trends on the order of centuries, which is a fool's errand.