The discussion started when you projected your own thoughts and biases into the faces of people in developing countries that you don't really know, and assumed

The discussion started when you projected your own thoughts and biases into the faces of people in developing countries that you don't really know, and assumed they don't actually want the financial advantages you enjoy. Now you've projected similarly onto me, who you also don't know, and decided I'm not a happy person. In both cases, of course, you actually have no idea how happy the people you're interacting with are, or are not. When you come to realize that you'll perhaps have gained a little bit of humility and empathy. Those will serve you well in discussions such as these.