The European Union cannot be compared to the United States. America is a nation, but Europe is not. Europe is a continent of many different nations with their own identities, traditions and languages. Robbing them of their national democracies does not create a European democracy - it destroys democracy in Europe.
Europe resembles a fine riverboat that was launched on a still ocean in 2000. And then the first storm that hit it, in 2008, started creating serious structural problems for it. We started leaking water. And of course, the people in the third class, as in the Titanic, start feeling the drowning effects first.
I'm a great supporter of the European Union. I didn't support entry to the Euro, not because I'm against it in principle but because I didn't think it was economically right for Britain. But that doesn't make me any less pro-European.