Your field is still in the US and it pays and you can live in a low cost area in the US. It doesn't have to be Arkansas. We have 50 states. You don't have to live in the most expensive ones. And, you said yourself that your "field" would tax you in both the US and another country, making your move unrealistic.
For some reason, and you're not telling us, you want to get the hell out of the US and it doesn't have to do with economics. You are letting your hatred of something cloud your judgement into making a stupid decision.
Move if you want, the US isn't forcing you to stay but, beware, it sounds to me like you are just going to make your life more miserable than you feel it is right now. Get rid of your emotions and think clearly if you really want to better your life.