Best quote I saw regarding the independence motivation:
"I would rather be an American than a European," said Vincent, 63, who owns a vegetable stall in one of Paris' open-air markets. "At least Americans love their country." (Source: Yahoo News: Constitution foes fear for France's soul)
And you've hit upon the exact motivation for the EU in the minds of its elitist architects. They don't want a united, patriotic nation under them. They want government without national attachment. Once the people get used to the idea of an extranational government, then they'll be more easily led to world government.