100% agree, that math only works if the balance is paid every month, which many people don't do but many do.
https://www.lendingtree.com/credit-cards/credit-card-debt-statistics/#carry-balance
It's cool if someone doesn't want to/think they can be/isn't disciplined and opts to pay cash to keep that habit of not carrying a balance, I get that. it's cool if that isn't the reason and it's something else too, not really my business or concern. My post was partially sarcastic because the tone of your post was so clearly that all of those using CCs are so foolish. The other side is it's so easy to see with today's prices why someone would opt to charge it and save an extra $.05 - $.10 a gallon over cash prices when cash prices are
only $.10 less.
Other fun fact for those CC points shoppers, some stations count gas station gift cards swiped at the pump as the cash price, so you walk inside and buy a gift card, collect 5% (3%, 2%, whatever you are getting) in CC points, and use the gift card (probably need to do that one visit in advance so the card activates) once it's active for the cash price. Obviously YMMV with that one.