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The Benefits/Disadvantages of using a credit card
One thing that has not been pointed out as a disadvantage of using Credit Cards:  people tend to spend more.  You can see This Study, and this one, plus about 500 others.  On average people tend to spend about 17% more with credit cards then with cash.  This amount dwarphs any perks one gets by having a credit card.   The safest way to use one is to only use them for purchases where you cannot make a decision to spend more.  One example would be for utility bills (that don't charge a fee) or at the gas pump. Using them at Amazon might have you upgrade your purchase or add some extra items.  Using them at restaurants might encourage you to order an extra drink or two.  Using them at the coffee shop might have you super size your coffee or add a pastry.   Of course this extra spending could lead you into a debt cycle exacerbating the financial hit many struggle with.  Please tread carefully if you decide to use them.