I think no foreigner has any place in Germany—not out of xenophobia, but for the following reason: Saint Francis de Sales said something very wise: "Bloom where you were sown!" With the mentality of your grandparents and parents, with the customs and energy of your homeland, with everything you absorb in your birthplace, you have a connection there, an anchor, and a duty. The further you move away from there to settle down, the more uprooted and unhappy you become. It only brings problems when a foreigner settles anywhere but at home. You see it everywhere there are foreigners.
I'm sorry to disagree. A very romantic explanation that of Sales's that goes against years of evolution and migration of our species Homo sapiens. If what Sales said were true, we, from all around the world, should go back to Africa, the cradle of our species. Columbus would never have bumped into America. My German ancestors would never have escaped starvation from post-Napoleonic "Germany" and arrived in Argentina.