Could we rather please conclude that the proper challenge for Europe is how to build a society that adapts to stagnant or slightly declining populations? If we are to begin to get a crack on worldwide overpopulation issues, I don't see how the richer nations can argue that there is a need for more children. Indefinite growth in a finite world is not possible. Concluding that each generation needs to be larger than the previous one to maintain the current economic system is indicative of a problem with that system, not of a need for higher birthrates.