I've put gasoline and groceries on a credit card just to get by to the next payday. Needed it to get to work so I could keep the job. Paid doctors and pharmacies with a credit card to get healthy, so I wouldn't miss work and lose pay. Car died, no money, took on debt for a car, so that I could work to get money to pay off my credit cards.
Debt is a trap for many people as they need to borrow money just to be able to work and make money. Sometimes when you are lucky you can climb out. But with just a little bit of bad timing and bad luck, this becomes a lifelong treadmill of misery.
It's like a modern form of slavery or serfdom. All for the benefit of being able to maintain a very small super-rich class in lives of unimaginable excess and luxury. And then they think they earned it.