Even if Germany had to write off the loans it extended to Southern European countries as part of the eurozone’s emergency rescue measures, the economic advantages of its membership would still be overwhelming, according to a recent study by the Bertelsmann Stiftung. … “Without the euro, growth of the real gross domestic product [GDP] in Germany would be lower by about 0.5 percentage points per year,” the study says, warning that without that euro, Europe “would fall apart politically” and become “a losing player in international competition.” And projections for the future are looking bright, the study adds. “Adding up...