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.
There are many ways you can convert money into Bitcoin, but it depends on how much money you have and how much you are willing to invest in bitcoin, if you are looking to spend like thousand dollar on it you can always buy it from online wallets, but if you only have couple hundred dollars you can buy from peer to peer exchange sites like local bitcoin, whereyou can buy and sell bitcoin depending on your location and the method of payment that you want.