Why don't we just invade Greece?

France, Germany and the UK are the three dominant forces in the EU, we are also the most exposed to the Greek debt. Why don't we in the UK just team up with Germany and invade Greece? Italy and Spain aren't doing great either. We could conquer the Latin countries and build a Germanic empire in Europe. We, the Norsemen, would control and dominate. We would take our rightful place as totalitarian rulers. Holland, also Germanic, along with Normandy (settled by Germanics) woudl be annexed as part of the Fatherland, which would stretch from the UK to Germany. We would take control and introduce the Germanic work ethic to the whole of Europe, we would turn it into an industrial powerhouse.