Germany's efforts to solve its demographic problem

Over at Demography Matters, there is a thought-provoking post titled "Germany gives the family a try." Essentially the German government is considering various incentives for couples to have more children, or any children at all. The problem that I see is that the reason Germans are not having enough children to replace the elderly dying off is due to strongly held beliefs about family size that are not going to be swayed by a few government programs.