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If you are traveling and lose your credit card, but in a country that has a reasonably active Bitcoin scene, you can sell some BTC to pay bills while "over there".
This may become an issue for us.
Here is a case for having an online wallet, "travels anywhere".
Actually there is big advantage when you have a bitcoin in your wallet,and suddenly of missing of your credit card in the country that accepting bitcoin as a payment in all kind of transaction because you can do whatever you want,especially in emergency case.having an a stock of bitcoin in your local exchange wallet is different from depend only those credit card,because ,you can used the bitcoins as your main back-up of your fiat currency.