I visited Argentina earlier this year, and the psychological effects of years of inflation were very real. The exchange rate has gone from 5 pesos per USD, to 350 officially in the last 10 years. The unofficial rate is up to almost 900 pesos per USD. In March the unofficial rate was half of that, so the currency has lost 50% of its value in the last 6 months.

Everybody prefers to be paid in dollars, and if you're getting paid in cash, why pay taxes? I had an Argentinian tell me that I could pay ~25% of the list price if I paid in USD instead of credit card, because the unofficial exchange rate and not paying taxes on it would save that much. Money requires trust that you can exchange it for goods and services, which are provided by other members of society, so debasing the money supply like this is killing society in the lovely country of Argentina.