Having dollar being the worlds currency is not necessarily a good thing. Yes, you can borrow at low interests rate for a while. But guess what? Those are still debts. And eventually rates rise due to inflation. Now you have hollowed out your industrial base and you are stuck with tons of debts.
Even if dollar gets weaker, better to have less debts and more industrialization
Even if dollar gets weaker, better to have less debts and more industrialization