Becoming a world currency that's a huge one. There are certain factors to be considered before flagging off a currency. The Government can't flag off what they don't have control over it. Now bitcoin is decentralized but cannot be traced. Don't get me wrong, your transactions are visible but a name and a face is not attached to it. So chances of using it for fraud are on the high side and if that cannot be controlled then it can't become the world currency. But widespread adoption is going to happen because it solves the need of remittance.
That's certainly true, mate. However, that doesn't stop Bitcoin from becoming an extremely popular cryptocurrency in the future. Perhaps, Bitcoin will retain its status as the reserve cryptocurrency of cryptocurrencies for years to come. I believe that for a world currency to become successful, it needs to be highly regulated and controlled by governments worldwide. Only then, a single & unified currency, will bring transparency to any transaction made around the world via the use of a distributed ledger.
It could be the US Dollar as it is today, or simply another currency backed by the government will take over. The most important thing is that Bitcoin is independent from any central authority or government, making it a global currency for anyone to enjoy.
The only possibility that exists for Bitcoin to become the reserve currency of the world, is that if the same becomes completely centralized and controlled by governments worldwide. Only then, Bitcoin can be easily regulated and tracked, reducing illegal activity on the same. Nevertheless, it's not bad to dream of a world backed by a reserve cryptocurrency someday. Just my thoughts
