First, over half of payday borrowers default on a payday loan within one year of their first loans. Second, defaulting borrowers have on average already repaid or serviced five payday loans, making interest payments of 90% of their original loan's principal.
When the mafia extorts money from you to allow you to live, they call it "protection money." When the government does it, they call it "consumer protection." Either way, you are paying for protection from someone who has the power to take everything you have.