I am glad I hear the warm and polite Willkommen hasn't changed. Thirty years ago a 20 something me visited Bonn for Erasmus and the following for medical Residency. Same excellent impressions, same humanely feelings, same satisfying conclusions. Although I returned back to my country, I always question myself if I should stay and regret. But you can never know how an hypothetical life path could unfold, because, well, YOLO.