It's simple ethnocentricism, nothing more, and isn't exclusive to the USA or any nation. Hell, you should see how many people here in Australia praise our miniscule involvement in any war. We even have celebrations for the pitiful attempt of an invasion of the Ottoman Empire, despite it being a collosal clusterfuck on all sides and a massive waste of life even my the standards of The Great War.
Humans have a pathological need to shout "we are better than you" at every opportunity. This is merely another one of those.
Humans have a pathological need to shout "we are better than you" at every opportunity. This is merely another one of those.