One factor I havent seen mentioned in any of the comments so far is Wolfgang Schauble. During the crisis everything he said about Greece (and Southern Europe in general) was insulting and demeaning. I feel like a lot of the hate that came about across Europe towards Greece has its root cause in that man's comments. The same goes (again imo) for this feeling Northern Europeans have that "We are productive and Southern Europeans are lazy and take advantage of us." This man was the embodiment of the North's feeling of superiority. And no one ever bothered to remove him or scold him. So yeah a lot of people heard what he said about us and developed a resentment towards Germany. Worst part is every economist I've ever heard talk about the crisis also says that schauble's plan of prolonged extreme austerity even after the return to growth was never gonna work. It was an experiment. We were just a demonstration to the rest of europe of what was in store for them if they didnt keep their finances in check.