I personally think we should be proud of the project.
Face it world...England had a project and then folded it into the American project.
Germany had a project (did Heisenburg sabotage it?) and most certainly would have used it, probably against Moscow.
Japan had a project, small...but it is the intent of the action, and besides they killed thousands in their germ warfare research.
Russia had a project which came to fruition after the war.
Does anyone seriously doubt that ANY of these nations would not have used this weapon?
America simply got there first, the science has ALWAYS been there and others were looking for it.
Since 1945, and despite all the anti nuke/anti US hooha, England, France, China, Russia, Israel, India, Pakistan, North Korea, Iran etc etc etc have gone nuclear....that we KNOW of. NONE of these nations have renounced their arsenals.
Europe stayed free because of the American nuclear umbrella during the cold war, not because of any standing army on European soil.