Then perhaps you ought to understand underlying motivations rather than seeing everyone 100% logical robots with complete awareness of situation.
Its not the rational and logical who use payday loans with similar interest. Its the single parent families. There's children involved, power threatened to being turned off. There's a car repair needed for they can work. You know, poverty.
And your excuses are just that- rational justification to fuck over poor people trying to make the best of bad answers.
If someone really needs a loan of $100 to keep the power from being turned off, is denying them a loan for $100 in the best interest of the children? I don't think so.
If you don't give them the loan, the power will definitely be turned off. If you give them the loan, they can pay the power bill.
If you're not allowed to make money helping poor people, there's very little incentive to do so.
The world didn't grow to the level of abundance that we have today by everybody agreeing to work for each other for free. We grew through voluntary, mutually-beneficial, exchange.