I like ducks' explaination...I, too am very grateful and thankful, to be an American. I love my country, warts and all.

Problem with no nationalities is that then we'd all be generic..same, same, as they say here.  Its HUMANS that make nationalities something to be discriminated against, not the nationalities themselves. And...that is such a shame...

Most folks are about as happy as they make up their minds to be. --Abraham Lincoln (1809 - 1865)