In answer to Redbeanz:
The general lifestyle in Argentina appeals to us. Being in touch with the city, having contact with other people, not spending your life in a car. The places you have those luxuries in the US are generally too expensive to live (NYC, San Francisco...).
In BAires, we talk to people on our street - familiar neighbors, porteros, shopkeepers, etc. Our home in Houston is in a community of about 30 townhouses, and we know two of our neighbors - most run away when you try to be friendly.
The availability of "stuff" in the US is great, but I prefer a slower, cafe lifestyle. Would I prefer Paris? Sure, but BAires is one-quarter the cost, and my French is pretty bad.