Keep in mind that under (U.S.) law, you are only liable for the first $50 of purchases made with your stolen card (or nothing if you notify the issuer before the card is used improperly.)
So even if the thief charges $50,000 on your card, the issuer eats the charges, not you.
Thus, the bank isn't looking out for YOUR interest; it's looking out for its interest.
--Lan Sluder