There are certain obvious advantages to using a single language. For example: I read r/IWantOut, as well as some CS career-related subs, and I myself am an Ame

There are certain obvious advantages to using a single language. For example: I read r/IWantOut, as well as some CS career-related subs, and I myself am an American coder in Germany. Based on my own experience, as well as my reading and hearing from others, programming is probably the best overall career choice if you want the option of living in various different countries, in terms of how accessible it is as well as having decent pay. A big part of that accessibility is English, that you can find a significant number of jobs in many countries that don't require you to already know the local language.