As an American, the only thing I don't spend on a credit card is rent (because my landlord doesn't accept it).
It's silly not to pay for everything on credit cards here, when you can get 3-5% back on anything with the right card. That's around $4k/year if you spend $100k before even accounting for doubling on some cards and other benefits like travel vouchers, Uber credits, and free insurance coverage. (Minus a $600-$1000 a year in annual card fees for high end cards.)
It's silly not to pay for everything on credit cards here, when you can get 3-5% back on anything with the right card. That's around $4k/year if you spend $100k before even accounting for doubling on some cards and other benefits like travel vouchers, Uber credits, and free insurance coverage. (Minus a $600-$1000 a year in annual card fees for high end cards.)