i'm originally from the US (Pittsburgh) and though I still consider myself to be from Pittsburgh I have spent the past past three years mainly in India (Mumbai - where my family is originally from). Although I have been making trips to the States at least once every 6 weeks I am starting to realize that i'm not so in touch with what's happening there as i would like to be

plus i've started driving on the wrong side of the road when im in the US - the opposite of what used to happen !!
growing up - we were mainly based in Pittsburgh but spent good chunks of most years between the US, India, Middle East, and East Africa. so being away from "home" isnt really that big of an issue.
so i guess i am kinda an ex-pat but not quite