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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".
Another situational reason, because you never know if the adoption of Bitcoin at that country is wide or even mainstream. They might scratch their heads what Bitcoin is, but I believe that this could be another good use to it. Like in the way that it will become a partial fund in case you lost some of your financing tools or money, and I can assume that you're gonna travel at a country that fully adopts Bitcoin. However, none other than those country that adopts bitcoin then it could be useless to use it.