I understand that most American pilots want to stay in the US and therefore want AA, UAL, DAL, etc. But I am not in that category. Studying other cultures and learning foreign languages is a hobby of mine. I majored in ancient languages in college. I took French and Latin in high school. My wife and I taught English to Russian immigrants when we lived in Chicago, and I learned a little Russian. I want to learn more. My point is, my wife and I want to see the world. We want to explore and understand other cultures. I want to be multi-lingual. We WANT to live overseas for at least a few years.
I would not turn my nose at AA, UAL, DAL, etc, but CX seems much more interesting.