Personally, I have no big problem on this concern since I can easily convert my money (assuming I got one) into Bitcoin and my Bitcoin into the local money I am using. Unfortunately, there are still places on this Earth where people even do not know anything about Bitcoin lest holding one. But hope will slowly change for the better in the coming years.
Things will change in future for sure when more people will be aware about bitcoins and at a moment if I have convert my money into bitcoins then I do it very smoothly from localbitcoins as that is the safest place I see to buy and sell bitcoins.