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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".
That is one the big advantage of bitcoin, if you travel to another country and as long as there is an internet connection and if you have coins then you are good to go. You can travel anywhere in the world with your online wallet.