If I were less stubborn, the advice of someone not in to credit cards can be a good motivation/sanity check for thinning. Recently I had some strangeness with NASA, and my wife, who really isn't into cards at all asked why we have it. "Well, sometimes we get a $100 back a year" "Is it really worth it?" Of course the MyFico answer is "What are you smoking??? $100 in free money!!!!" but in general these sort of questions are good. How much extra $X justifies keeping the card, taking into account any effort in remembering to use it and maybe keep it alive.... And some cards we keep for perhaps sentimental reasons, which doesn't mean they should be chopped, but we should recognize that there isn't a financial case.
