You think bridges aren't burnt when you have to resort to working in Afghanistan to earn a crust.
As Fox said you better hope you don't get sent to Qatar or the UAE on R & R, otherwise you may have an interesting conversation with the immigration officials, and since all of the GCC countries share absconder info now you may have to watch yourself in a lot of places.
Final point is that you are wrong again with your generalisation that,
describing the reality for a majority of expats in the ME. this majority do not save that much, yes some do but most do not, due to the horrendous increase in living costs over recent years
Rent for people in Serco accomodation has gone up 7% in the past year, and on average 10% the year before. In that 2 years, the Centre controllers take home salary has risen by on average 50%, with some guys take home salary almost doubling. Since this thread was asking about UAE Centre guys I think your generalisation is at best irrelevant and at worst complete bollocks.