The pessimistic and negative daughter of a concubine living in the ancient times thought - since life is so difficult, why should one invest serious effort in struggling to live?
The life of an ancient noble woman is often determined and controlled by her family. Moreover, one's actions often implicate one's entire family - thus, it is fairly common to see an unexpected calamity result in suffering borne by one's whole family. Managing to live a good and successful life while retaining one's dignity is simply too difficult to achieve.
Ah, living in the ancient times is simply too dangerous - we should all just sleep till we die.