> I didn't need one. I have US citizenship through my mother, who came from here originally. I don't consider myself an American in any sense except on paper, but it's certainly very useful having that. I travelled on my US passport, and when I go back home I'll travel on my NZ one.

That is intensely useful, it has to be said. My future sister-in-law has it the same way because her mother is American. She says it avoids a lot of hassle at Customs and Immigration to be able to go through on whichever passport is relevant. It doesn't save time in America, unfortunately, because when my brother travels, she still has to wait for him to go through all the checks.