If i had an opportunity like yours and didn't have family ties keeping me where i am, i would certainly look at getting out. If only to experience another culture and another part of the world that is very different from my own, to broaden my horizons. A PhD program is not that long and should you decide that living abroad is not for you, you can still go back afterwards with some valuable experiences, connections and life skills that others who stayed in their own country did not acquire. But i would suggest that before making a decision you think about exactly what it is that you want to get out of this. Is it just about better job prospects or do you have a deeper drive that motivates you? Would you be prepared to put in the extra work needed to learn how to navigate another country's academic system and how to get by in day to day life there?
Sorry if this isn't really much of a "commie perspective". I'm not sure how to give a "communist" answer to this.