Bitcoin always have a future and certainly have a future. You should not be too nervous! The important is that maybe you have to need so much money to invest in it.
Bitcoin is future digital currency So it will use the most of the people for future transaction process. But it will not affect the other currency. Bitcoin is private process. So it will not affect any one's. It will easyway to save and invest. If you will know the process. you will easy to work and process the bitcoin in the future.
To make it clear, bitcoin is using a decentralized system which is very opposite to a digital currency that has it's own central server to run a transaction.
Bitcoin is the best because it has limited supply and once you invest and the demand will grow you will be profitable.
Of course bitcoin has a future rather i would say that future is of bitcoins. It is the first and only popular digital currency with a lot high value of 8000$ plus.
See the demand and current volume of bitcoins, you will be amazed on how fast it has progressed. Since it has a lot potential, i will suggest if you can afford , just buy bitcoins for the future.