I have lived in both NY and San Fran and now in buenos aires. Trust me when i say if you live paycheck to paycheck in NY and San Francisco you will be doing the same here. Buenos Aires may seem cheaper at first glance but when you're earning pesos, that image disappear quickly. I am able to live here because i still work for NY in dollars. If i couldn't do that anymore I would be on the first plane out. Not because i don't love the place, BA is awesome, but because economically argentina is not a stable environment and does not provide the least bit of financial security if you are not earning in a foreign currency.
I am sorry, i don't want to rain on your parade at all, but when anyone says that they would move here because its a financially a better option, i tend to ask 'are you sure?' because the economy and peso are as volatile as rodeo bull with his balls tied in flank strap.