Answer:
they do not want to carry around large amounts of cash.
Step-by-step explanation:
Debit cards are comparable in appearance to credit cards. The difference is that debits cards draw funds directly from the customer's account. It means that if the customer does not have sufficient funds in their account, a debit card transaction will not go through. Paying with a debit card is 'almost like' paying cash, only that the funds are held in a bank account.
People choose to carry and pay with debit cards to avoid moving around with a lot of cash. Debit cards reduce the risk of carrying a lot of cash.