@MontegoMack wrote:
Buy *why* SD a card when you can use it? Used or not, as long as the account is open, you're increasing you AAoA.
But why use it when you get rewards (or better rewards) on a different card? It's all about the money/rewards/benefits. Every so often you take it out of the SD so that it shows activity and doesn't get closed, if you don't want it closed.