What is the obstacles, challenges and problems that Bitcoin can face it in 5 years? How we can help Bitcoin to take more authoritative place in the world of currency system?
In my own opinion, the obstacles, challenges, and problems that bitcoin will face is the decision of each countries of banning bitcoin or it will not last. But we still all hope bitcoin will last because bitcoin is very helpful and a good source of income that can provide all of our basic needs.
I don't think it is the biggest problem. The point of having a decentralized currency is to prevent that kind of thing from happening.
I think that only technical problems or lack of usage can drive the Bitcoin price down. Bitcoin is very strong technicaly, but it needs more adoption.