I don't know if it involves patriotism so much as identification.  For example, my mother and stepfamily were Catholic and I went to Catholic school, so Catholicism has certainly shaped my life and in some ways I am a product of it, but I would never identify as Catholic.  It is a part of my personal culture, but I do not fit into the culture of Catholicism.

Another example, I am sure I have many characteristics of someone who is a product of American culture (my fierce defense of freedom of speech and my faith that average people can change the world attest to it), but the typical markers of American culture: materialism, consumerism, entreprenurialism, pop culture etc. I don't identify with at all, and have even had Europeans incredulous when I've told them I am American.  I live in a world dominated by these things, so they must shape me, but I still feel like an alien when I go to a mall or turn on the TV, like, "who are these people?"  I've had more culture shock at home than I have ever had abroad.

Another: I've never been poor or rich, but like Izzy, I have always felt the most out of place around "normal Middle class" people.  Again, I feel like an alien.

I suppose I could say I belonged to some "Western" culture, as I certainly don't feel an identification with that of the "East,"  but the West is hardly homogenous.  To say that I and Paris Hilton and an Irish fisherman shared the same culture would really be stretching the definition...

I guess I could lay some claim to the intellectual/progressive/NPR listenning/socially responsible/organic foods eating/wonkish/urbanite bobo crowd.  I suppose that is my "culture" but even within that culture, I feel like I am standing on the sidelines observing rather than a poster child for that culture.  

I'm just a postmodern girl in a small world.  Cultures seem to be less and less like unique spheres of realities defined by time and place and participants and more and more like a voluminous repertoire of perspectives and experiences we can use to inform our individual realities or ignore depending on the situation.  

Those who can make you believe absurdities can make you commit atrocities. -Voltaire