>>>>>One should not use credit card when it is not needed. I mean small purchases can be easily handled by cash...
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>>>>That's a better way. I don't check credit cart reports (I don't know how you call monthly credit cart reports) for small payments usually. One day I figured out three payments for 7,50 from same supermarket sequential so I revealed that mistake. They had tried three times and said my wife" your card don't give up" so my wife had paid with cash. I found bill, writes "cash" at bill and sent bank and cancelled payment. After that I don't use credit card for small payments.
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>>>It is called monthly statement. Usually, I have 4-5 lines there and even then I have to think what it was exactly. I cannot imagine checking 20-30 or more lines that many people get because they use cards to buy groceries.
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>>It's okay to use a credit card for everything, but you have to pay the balance each month. I use mine like that because I get air miles, which my wife and I use to take trips.You must be the master of the card, or the card will be the master of you, whether it's MasterCard, Visa, or otherwise!
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>Naturally, I pay balance every month. Also, I get cash back (1% usually) on every purchase so I have stimulus to use it everywhere. At the same time, using it everywhere would increase probability of mistakes and/or fraud, because it is not possible, imho, to memorize 20-30 or more transactions made during previous month to verify monthly statement.

I wouldn't want to try to memorize them, either. For me a simple system works. I bring my CC receipts home and enter them into Quicken within the next few days. That way it's a simple matter to reconcile the Quicken account to the statement when it comes. It's rare for me to have more than a transaction or two that isn't already entered.