Goodbye Germany!
Native ethnic Germans just don't seem motivated to have children. Modern Western economics do seem to make children an economic burden, especially when compared to a century or more ago when children provided labor for family farms and businesses. Now children are not expected to contribute, and are instead expected to be subsidized - and not just until age 18, but well into their 20s... discouraging many affluent people from bothering with having a family.
Of course this only discourages affluent Germans with Western expectations of children. Muslim immigrants can make up the difference, so long as ethnic native Germans don't care they are being replaced. Once upon a time I thought it would require Nostradamus' version of WWIII to allow the Islamization of Germany and the rest of Europe. But European apathy and lack of nationalism or valuing their own culture could allow it more like the proverbial frog cooking in the slowly heating pot of water... This article at Zerohedge.com says: "Since the German population is declining at a staggering pace, before the end of the century there will only be 22 million indigenous Germans left. Currently the working population has already begun to shrink. This drop is still moderate compared to what will come after 2020. The disappearing of the nation that has just begun will have catastrophic consequences."
The trends in place mean less workers to fill job openings. The immigration from the Middle East will continue to replace the lack of native Germans, and before long Deutschistan will seem more like Syria and less like Europe.