Comment by abdullahkhalids

The reason nuclear bombs are "uncivilized" isn't directly related to the number of deaths due to use of a single one. The reason is that the by using nuclear bombs, the US created the precedent for the usage of the only weapon humans have created that, if used by all sides, can result in effectively billions dead at extremely low cost.

To kill a billion people by conventional bombs would require years of sustained effort costing trillions of dollars, and I imagine the army doing that killing would collapse under the moral horror of its own actions far before that number is reached. On that other hand, thousands of nuclear weapons can be deployed by a very small group of amoral people with instantaneous destructive effects.