and loads in the Sterling zone. So what point are you making?
How do you imagine Germany can control the exchange rate of (almost) the whole of Europe against the US dollar, and the Japanese Yen?
fact remains that a fluctuating exchange rate is very bad for business and international trade.
Also bad for you when you go on hols in Spain and can't forecast what it is going to cost you, or if you want to buy a German car or an Italian fridge, or if we want to sell them some of our stuff.
Toyota and Hondas made in the UK have suddenly found the cost of parts from the rest of Europe have rocketed in price. Same has happened for electricity or gas bought from Europe.
Think how awful it would be if the value of a pound in Cumbria was different from the value of a pound in Hampshire, and it changed from day to day, and could change 25% in the space of a year, and the banks could charge you 5% or more every time you spent your local pound down here