Comment by cturner

I don't think this is a strong argument. Physical cash is on the way out. You can do payments through mastercard/visa lines, and wired transfers are straightforward. FX conversions are straightforward when everyone has a phone. In 2007 I had a situation where I was being paid in Australia, but living in London. I used the lines on my cards for that year, and don't remember it being inconvenient.