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?
SO you are advocating Bitcoin becoming centralised - which does not make sense at all.
The very core of Bitcoin is that it IS a decentralised "world currency" and with that is the fact
that no one central agency or country controls it and in turn is able to manipulate it.
Every centralised FIAT currency has at some point in its existence been manipulated by its
controlling bank and or country.
As others have pointed out Bitcoin is already a world currency, it can be used* anywhere in
the world.
*bought, sold and transferred
Anyway, being a world currency in order to buy a coffee is not necessarily what everyone wants.