You are very defensive about this. It is not advice to you or anyone else here other than the OP, and it's advice specifically based on what he mentioned. He is

You are very defensive about this. It is not advice to you or anyone else here other than the OP, and it's advice specifically based on what he mentioned. He is introverted and an engineer, dissatisfied with his culture. He has done travel but not gotten much enjoyment from it. My recommendation is to move to another culture and resettle there. I also have advise for him to get involved in a relationship, which will really help with his life enjoyment if he picks someone the exact opposite on the personality spectrum, especially given his type which is prone towards holing up and doing research or engineering. Since he will be moving to another culture this means his most available girlfriends will be someone overseas. Should this lead to marriage it then becomes a good way to remain in the culture. It has nothing to do with mail order brides or race betrayal or whatever you are freaking out about. It has to do with a complete package of advice for this one person and his circumstance. It is not meant to apply to you or to people in general.