Imaging that you are on a space mission and you have to sleep in zero gravity , help fix a satellite , and build a factory in orbit.

A man was walking in the city, when he was accosted by a particularly dirty and shabby-looking bum who asked him for a couple of dollars for dinner.

Nihilistic Zhuang Zhou had to eat meals to survive. You work to make money and use the money to buy food and clothes.