Sorry to come back only this late. Your answer is so comprehensive that I can only thank you with all my respect.

Obviously, I am very much for a solution of the integration of immigrants into Germany on a basis that is NOT based on blood. Hadn't we raised a bloody hell in the past on the basis of "Blut und Boden" policies?

Definitely everyone born in Germany should have a right to German citizenship and also should not lose its citizenship of its parents. If the parents themselves have two different citizenships (meaning they are a mixed nationality - both of them other nationality than the German one -) then the parents should have the right to decide which parent's nationality should passed along from parent to the child, in other words which second nationality other than the German one the child could keep in addition. Let's say you had an Indian father and a Portugese mother, both living and working their whole adult lives in Germany, their children should have the right to German citizenship and one additional citizenship of their parents.

Every country I know of has permanent residency status - that's what most of those 'foreigners' in Germany have.

I don't think that this is right, or at least it wasn't until the 1980. Most 'foreigners' had renewable residency and working permissions, even if they were married to Germans, studied in Germany and worked in Germany their whole professional life-time, they never got permanent residence status that the US for example granted me after having won the Green Card Lottery in 1987. I understand that Green Cards today are not anymore permanent, I guess I am one of the last lucky ones.

My brother-in-law, for example, studied, lived and worked his whole life in Germany, married to my German sister, and never got an unlimited work-and residency permission. He had no difficulties though to get his extensions regularly for another five years every five years. But I remember still the times in Germany where German mothers, married to 'foreigners' had to fear that their own children couldn't get German citizenship, because the citizenship according to German law was decided not only on blood, but on the blood of the father exclusively. Thank God those laws don't exist anymore.

Ha, my grandchildren? They can be whatever they want to be. I haven't asked for US citizenship yet, though I am allowed to do so, my son made a conscious decision to become a US citizen and my grand children, God willing, will have their full rights to decide what they want to be, wherever my son might raise them.

On an emotional level, the question to which country a person, who lived in two different cultures and nations during age 10 to 18, is loyal to, is a very difficult question for that person to answer. I am all for never forcing a person to make a decision about it and granting that person to decide to either have both citizenships or to make a decision to one nationality freely and of his own choice.

Thanks for bringing me up-to-date on the situation of the kids of Turkish parents living in Germany. I wasn't aware that the bloody nationality issues are still bloody problems for so many. And thanks for reading material !!!