Just curious... For all the Americans that don't want to be American what nationality do you want to be and why?
Great question.
For me, it's not really a question of preferred nationality. If it were, I'd make a greater effort to become the nationality I'd want otherwise. Rather, there are aspects of US socio-political culture that I vehemently disagree with, because it echoes far too greatly the imperialistic attitudes of Rome. They seem so ubiquitous, though, that the term "American" seems basically synonymous with them, here and the world over.
Therefore, I do not identify as American, not in terms of nationality but in terms of personal values, because I do not want to be associated with things I find abhorrent.