It's not about boogie men, it's about economic realities.
Very different countries can't be in a functional monetary and banking union without a common fiscal capacity. In terms of the USA it would be like there was a Fed without a treasure. Or another way to see it, it's like the countries in the Euro use a foreign currency that they don't control. If you are interested I recommend this prescient article by Wynne Godley (1).
So, if the design of the Euro is bad, why don't change it? Because for some countries is very advantageous. Germany being the best example, they are an export powerhouse that now have unrestricted access to the common market and, because is a common currency, it will no appreciate or devaluate following the commercial balance. Of course, this is sell like they don't want to finance the lazy pigs in the south.
Very different countries can't be in a functional monetary and banking union without a common fiscal capacity. In terms of the USA it would be like there was a Fed without a treasure. Or another way to see it, it's like the countries in the Euro use a foreign currency that they don't control. If you are interested I recommend this prescient article by Wynne Godley (1).
So, if the design of the Euro is bad, why don't change it? Because for some countries is very advantageous. Germany being the best example, they are an export powerhouse that now have unrestricted access to the common market and, because is a common currency, it will no appreciate or devaluate following the commercial balance. Of course, this is sell like they don't want to finance the lazy pigs in the south.
(1) - https://www.lrb.co.uk/the-paper/v14/n19/wynne-godley/maastri...