I think that Bitcoin will not be a reserve currency of the world. There are back-up reserves in the international organizations and they are willing to provide incase of downfall of the world economy like The Great Depression of 1929-1945.
Exactly friend, your reply is absolutely right and I will appreciate it.
Bitcoin will not be the currency in this world, but Bitcoin will be a valuable asset.
Bitcoin can be like a Villa, a House, a Land or a Digital Gold whose prices are expensive