I have traveled to many countries around the world. Some accept credit cards. Some only deal in cash. Some accept US Dollars. Some only accept local currency. Nowhere, however, I have dealt with a system as weird as Argentina. There are myriad exchange rates.
Shops love selling them since the margins are great, the local government loves them since it brings in additional tax revenue, and the tourists love them since they don’t want local bacteria to interfere with their enjoyment of authentic experiences. Mother nature pays the price. It’s a classic example of negative externality where the local businesses, the local government, and the tourists get the [perceived] benefits at the expense of the environment....