Hence, haven said all this I think the next step of Bitcoin should be targeted at becoming a central world currency having it's own bank and printed in all countries for use. Then it can be a centralized currency for global use and not only on the digital world
What's your take on this?
This is where you are mixing up things; it will be difficult for Bitcoin to be legally accepted by the government. The government is not ready to accept Bitcoin as their legal currency because Bitcoin is a currency that they can’t control. And since they can’t be able to control it, they definitely won’t accept bitcoin as their legal currency in their country.
However, on the other hand, if they accept bitcoin as their legal currency, that means bitcoin is not what it means to be because it was created to be an alternative currency and won’t be controlled by anyone. But if governments accept bitcoin as their legal tender, they will definitely want to control bitcoin, which won’t favour the investors.