Do you ever wonder whether too many rules start to erode public-spiritedness/politeness? Seems to me that some people think any sort of behavior is OK unless there is a law against it.

Example: behavior of people with flu-like illnesses in planes and crowded places. All evidence is that putting your hand over your mouth when you cough or (better) coughing into a tissue or the crook of your elbow is one of the strongest ways to reduce disease spread. But large numbers of people simply open their mouths and cough away, right into the faces of anybody unlucky enough to be nearby. AFAICS this seems to be almost normal for affluent kids in their mid-late teens. Should there be a law against that too?