I have a wallet chock full of cards. I have a card for each kind of spending. I want to earn 5 points per dollar on my airfare, 4 points at restaurants and supermarkets, 5 points at office supply stores, etc. I also have a huge stack of annual fees, that only make sense if I’m getting a lot of value out of each card and spending a lot of money in each category I’m maximizing.
For most people the 10 credit cards in my wallet is too many. And that doesn’t count the cards in my desk drawer.