Offer your thoughts or opinion on the input financial query or topic using your financial background.

Why do cash back credit cards give a higher rate for dining and gasoline purchases?
These two categories ensure you will carry the card in your wallet (since they only work for physical locations), but don't tend to have excessive spending (most people maxing out at $200 or so per month, so $2 for the bonus).  You then use the same card for other purchases, because you have it on you, where you only get the 1%. It worked for me, I started carrying the Amazon card when I found out it had a higher percentage for gas purchases.  I only use it for gas though.