I have one card, the Amex Everyday card, that gives me 20% more points for billing periods in which I have at least 20 transactions. When I originally got the card, I used it for groceries (2X) and split my purchases into multiple transactions at the self service checkout counter (usually 2 or 3), which would fairly easily let me reach my 20 transactions per month. But I stopped worrying about that when I switched my grocery spend to other cards. Now the Everyday card is the “understudy” for when I get fed up with the Plat fees and coupons and cancel the acts as it then keeps my MRs alive. I keep it alive with the earlier mentioned Patreon subscription.

Merchant offers are sometimes a good reason to put spend on an otherwise sub-optimal card.

I have one card that Barclays has threatened multiple times to close due to inactivity (Arrivals). I will call them tomorrow and close the account. Not worth keeping open. My goal is to simplify my card fleet over the next few years, so some need to go.