Habit

When the beggar went to Little Wang's house to beg, he gave him ten yuan. The next day, the beggar went again and gave him another ten yuan, which lasted for two years. Suddenly one day, Xiao Wang only gave the beggar five yuan. The beggar asked: why only five yuan? Xiao Wang: I am married. The beggar slapped and said angrily, "How dare you take my money to raise your wife? Enlightenment: when providing free service makes customers a habit, this kind of service is no longer an advantage, but a disadvantage!