For the same reason Hitler thought we were vile: because we are a mongrel country, populated by waves of immigrants. F. S. Key told us to "praise the Power that hath made and preserved us a nation", and indeed, it would take divine intervention to make us a nation in the etymological sense: a group of people who can pretend that they all descended from the same totem. Sure, we all hate each other, but we are estopped by history from taking our hatreds as seriously as comes natural in the world's plentiful ethnic pest zones. The wretched refuse of their teeming shore has made a land of wealth and freedom.