These arguments are countered in two ways. First, the history of borrowers turning to illegal or dangerous sources of credit seems to have little basis in fact according to Robert Mayer's 2012 "Loan Sharks, Interest-Rate Caps, and Deregulation". Outside of specific contexts, interest rates caps had the effect of allowing small loans in most areas without an increase of "loan sharking". Next, since 80% of payday borrowers will roll their loan over at least one time  because their income prevents them from paying the principal within the repayment period, they often report turning to friends or family members to help repay the loan  according to a 2012 report from the Center for Financial Services Innovation. In addition, there appears to be no evidence of unmet demand for small dollar credit in states which prohibit or strictly limit payday lending.
You can’t always predict when an emergency will occur, but you can prepare for it. Ideally, you should keep enough money to cover your household expenses for two months or more in a savings account. If that goal is too high, aim to save at least the amount of one paycheck. It is also a good idea to have a few credit cards available for unexpected costs.
The best way out can depend on where you took out the loan. Laws governing payday loans vary from state to state. Some states, like Colorado, are currently working to change the way payday loans are administered in order to make it easier for customers to pay loans back and avoid the snowball effect of constant loan renewal. Other states require payday lenders to offer borrowers an Extended Payment Plan (EPP), which stops the accrual of fees and interest.
A report from the Federal Reserve Bank of New York concluded that, "We ... test whether payday lending fits our definition of predatory. We find that in states with higher payday loan limits, less educated households and households with uncertain income are less likely to be denied credit, but are not more likely to miss a debt payment. Absent higher delinquency, the extra credit from payday lenders does not fit our definition of predatory." The caveat to this is that with a term of under 30 days there are no payments, and the lender is more than willing to roll the loan over at the end of the period upon payment of another fee. The report goes on to note that payday loans are extremely expensive, and borrowers who take a payday loan are at a disadvantage in comparison to the lender, a reversal of the normal consumer lending information asymmetry, where the lender must underwrite the loan to assess creditworthiness.