If half the world were using bitcoin everyday we would be living in a completely different world so those numbers are meaningless. That world would likely have vastly superior technology. If bitcoin breaks because its too popular/useful thats a good thing. Bitcoin2 will fix the issues and we will be better off in the long run.
Agreed!
If we break Bitcoin by eventually convincing half the world to use it as their primary currency and payment system, then we fucking won.