Fantastic post, Black Widow.
If you don't mind two small comments ...
Please don't forget about us atheists - what holds us together may not be called God by all people.
And, about Euro - well, my thinking is that one current political imbalance in the world is that the US are so much bigger than the other countries, thus we must do anything to build Europe, so as all of us European countries can speak as one voice, make a step towards the understanding that we all are above all citizens of our common world - and, to me, the Euro is a major step towards this goal.
------------------
The world is my oyster !