I realized after reading this (and 'Lies We Tell Kids') that we may not want children to use profanity for the same reason that we don't want them to use drugs

I realized after reading this (and 'Lies We Tell Kids') that we may not want children to use profanity for the same reason that we don't want them to use drugs or have sex: they're more likely to exercise bad judgment in how and when to use it. The downside consequences are much more limited, of course, but whereas George Carlin will make us laugh while dropping 'fuck,' children are more likely to use the word in ways that make us cringe.