" History teach us that there cannot be a coherent union of people who are made up of different nationalities, speaks different languages, have a different cultures, have different history.
[...]
EU was a reactionary response to the incredible super power of the United States. Many of the EU laws and regulations, including the EURO, were nothing but a set of anti-US emotions to confront the US on economic, political and "may be" economical level, all masked under a strong Europe. Because it is mainly hostile emotions, it will eventually fail."
Sorry, if I'm being blut, but no, that is not the reason why we have the EU. The reason has more to do with the heritage of WWI and WWII in Europe. The United states have never even remotely experience a similar amount of destruction, loss of life and overall misery. You simply haven't. And unless the U.S. is about to engage in a war with Russia, North Korea and China simultaneously, you won't.
It is true, that mainly the French dream of a socialist superstate under french control as a counterweight to the U.S. "super power". That won't happen. Britain, Poland, Spain etc. won't allow it. But: The common market just like many other other areas of cooperation are here to stay. If you think, it's all about the United States, your dead wrong.
And that is the main problem: Lack of understanding. Too many of my compatriots gave in to a stupid anti-americanism, because they couldn't UNDERSTAND how the USA work. It's the same the other way round.
"EU is proven to be an economic failure so far and the future will be even worse. The average uneployement rate is twice then that of the US (10% Vs 5%), the EU GDP growth is half of that of the US (2% Vs 4%). EU has adopted a heavy socialist welfare system that impose very heavy taxation on hard working people and businesses, taxation that are much larger than that in the US."
Ironically you would have to thank the Germans and the French for that. With their socialist (Schröder) and pseudo-socialist (Chirac) governments the biggest economies within the EU failed to grow. On the other hand, growth in Spain and Poland, for example is still exeptional. But the reasons for Germany's and France's failure are to be found on a national level. After all, all the important factors like taxation or the welfare systems are (and will remain) in the hands of the national governments. The EU itself has very little to do with that.
"The socialist welfare system will eventually got bankrupted, and the utter economic disaster will strengthen the voice of nationalism in the large powerful members (Britain, Germany, France, possibly Italy) and the call for leaving EU will get very strong and this will lead to the collapse of the Union that was built on sand."
Britain has and will always have a welfare system of its own choosing. Any (french) attempts to change this are doomed to fail. So far, Britain has profited from the common market. Of course, if the UK desires to leave the EU (or any other member state for that matter), it can do so. But such will rather have a negative effect on the respective country's economy.
However now days, socialism and welfare are causing terrible damage to the German economy, umepmloyement rate is highest since WW II ! It is true that Germany still the third largest economy in the world after the USA and Japan, but its economy is suffering greatly. I think the EU has greatly adopted a lot of the French heavy socialist and welfare economic model (disaster/failure) and unfortunately Germany with a willing weak socialist Chancellor Shroeder did not stop but welcomed it and caused terrible damage to the Germany economy.
I guess you weren't around for the civil war. Oh well, that was American blood spilled on American soil, so we can ignore that as insignificant.
The carnage you talk about in Europe was of your own making, so why do demand instantaneous sympathy?