This is driver flexibility. They choose the amount of deliveries they take. The drivers do this because they want more money. People generally courier as an in

This is driver flexibility. They choose the amount of deliveries they take. The drivers do this because they want more money. People generally courier as an in-between job, like construction laborer, and they appreciate the ability to earn more, quickly. As a laborer I used to put in 14h days with cleanup. But that kept me from losing income during a career switch so it was a choice I was happy to make.