Ok, so you're demonstrating that you have a very old fashioned view of the world. Huge numbers of younger people (and plenty of older ones) don't feel much sense of national identity, beyond some vague little soundbites. A 20 year old student in Britain has a lot more in common with a counterpart in France or Germany or Sweden than they do with a 50 years old fellow Brit. And thanks to the Internet and free movement increasingly vast numbers are learning just that.
Our shared European identity is one of liberalism, tolerance, peace and freedom of movement, employment and trade. That's a much stronger and more personal identity than anything a national government has ever offered me. Given that Britain apparently doesn't share that, right now I have close to zero affinity to British culture, and I keep hearing the same from many of my friends.