There are ways it can make sense, but it’s often a sign of using a card to stay afloat, maxing it out, and then using a new one to try to stay afloat, now with bonus debt.

It works in my family that we are basically financially independent from each other and have a shared account for shared expenses. As a result we technically have multiple credit cards, but in practice it’s mostly the shared card, and occasionally the “me” card. Automatic payments, no fees and cash back makes it pretty easy.