Well Bitcoin is money and assuming it can be a big thing in the near future transaction with buying and selling will be the first to ensure to adapt it and I think it is right now and I think in that said future everywhere you go you can definitely can use your bitcoin in any transaction available and a much larger scale of buying and selling all over the world.
One currecny worldwide, no taxes or fee in transfer, easily transferable to any country instantly without any agent / fee. Which currency gives you all these features. Only BITCOIN.
Although bitcoin not spread everywhere yet, but time is near when we shall see bitcoins in all places.