2. All the world currency will be exchange to bitcoin slowly until its all illiminated
But their is still a big chance that bitcoin is going to be the primary currency, i just thought of it bitcoin can be the number one but still we have the secondary currency but for sure it will never happened that bitcoin will become the only currency that is going to be use in all over the world.
As the bitcoin is getting popular it is going to influence a lot of users and companies. A lot of companies is going to be interested in making it as an assets. And in the future for sure bitcoin is going to be a big currency. Still a lot of things could still happened but bitcoin is going to be a big currency in the future.