"When did you become British?"

We have had AT&T U-verse for some two years, I think, and recently we upgraded to HD and added some channels. My favorite addition has been BBC America and is now my go-to channel when I feel compelled to watch TV (typically when I'm crocheting this afghan that will cost me a pretty penny). I was watching it yesterday, and my dad just burst out "When did you become British?" I didn't respond aloud, but in my head I thought "Oh, dear man, I've been British my whole life. As well as Continental, Scandinavian, what-will-you." I honestly have very little self-sense of a nationality; oh, I'm likely certainly American, but I'm also certainly not 'Mur'can. Usually, whatever nation I am reading about at the moment is the one I feel most at home in. One of my earliest fascinations was geography/social studies, and I would look through, transfixed, this National Geographic world atlas we have (from 1993); it had a section on every nation in the world, with pictures, and I would think how wonderful it would be to be there, with these people who, though they wore different clothes, spoke different languages, ate strange foods, seemed incredibly familiar, that I felt a deep kinship with (and, if you are unaware, I grew up in a well-nigh completely white farming town in the thick of the Midwest). Alas, the closest I've come to joining them is Connecticut. However, I've lately felt a very strong urge to "walk the Earth," like Jules in Pulp Fiction:

Perhaps the one thing that has really kept me from doing such is eloquence: I am afraid I will be more like Moses, slow of speech and tongue, and left wondering the dessert with people who hoard, feed, and sleep, and know not me. No language barrier lasts in the face of exuberance, but I might be too subtle and too timid. Not to mention too poor.

UPDATE: I have just become a little more British, having received an offer to study for an MA in Composition at Durham University. Now comes the hard part: financing. My options are, at the moment, take out a massive loan and just go, or delay till next year until scholarship and grant options open up again. As weak as I am with the way my life has been, I could easily give in and take out the loan, but I must have patience. Besides, in the interim, I can explore the possibility of teaching English abroad.