American Express
Product
Using as a charge/credit card paid off weekly to avoid interest while earning rewards/points
"I do have an American Express now that I pay off every single Monday."
More source quotes
"I have 300,000 American Express points right now. Like how much does it cost American Express for me to have those points? Zero because I haven't done anything with them yet. Did I modify my behavior to get those points? I 100% did."