True, but on the opposite end of the spectrum, the Depleted Uranium rounds fired by the A-10s gun makes for really bad PR after the fact. Lots of current wars end up being waged in a counter-insurgency context and excessively messing up the place up for the locals is not a clear path to hearts and minds.
So, if it's all the same, why not clean it up? Though I totally get and appreciate your quip!