For
It simplifies trade and travel worldwide.
Against
It removes economic control from individual nations.
Anonymous excerpts, translated where noted.
“I agree, If we are going to be a global economy, we need to have a global currency.”
“Sure, one currency is convenient for consumers.”
“Countries lose control over interest rates and money supply, so one global currency can’t fit every economy’s needs during recessions or booms.”
“When it crashes the entire world will burn.”