> Banning clorine gas was a silly thing to do -- it didn't exactly stop the next war and only made the concept of war less terrifying.
This is such a silly statement I don't know where to begin. They knew there was going to be another war, did they? How did it make the concept of was less terrifying? WW1 was the "Great War" because it was the first time war was terrifying for everyone (except the stupid British generals, but don't get me started).
On this statement, one would disagree with the nuclear non-profileration treaty and think that WMDs are ok because war would be more terrifying.
As for your cheating example, cheating is generally frowned upon but it is not even close to illegal and people do it all the time.