It is good to have a regular source of income like a salary so that you can better budget your finances until the next payday. And if you have credit, you can expect to pay it back when you receive your paycheck.
There are really times though that you just cannot wait until the 15th or the 30th and you will need a payday advance. It could be that you child got sick or you need to pay an emergency expense. You can just be thankful that because you are receiving a regular a salary, you are qualified to makes these loans. if not, you will really find it hard to apply for a loan.