Acts done by people will affect people again. We live in a society of people. The comfort, profit, greed and other things a person expresses are the feelings others will have too. Hence a brick damaged in a wall of society will weaken the entire wall.
A casual deed should not be a real casual! We should pay attention to a casual deed that is required for a serious deed. It sounds ridiculous! Yes, there should not be any casual way of dealing things. Let us be serious in all things and teach our next generations to follow it.