ME in General
Don't do the same mistakes, guys.
Don't trust the Arabs. Dubai is like a bubble - it'll burst in the near future.
The same with all the mad men in DOH and BAH or SHJ.
Excessive costs of living (100's of % in a few years), almost no salery increase (GF nil for decades), only exchange rate prot. of 50% in EK, heat, everywhere sand (in your pants, eyes, ears, car, bed...)
Unfair treatment between locals and expats.
Hope you're not married - cause that's what they're looking for. Married guys have to take more sh.. From both ends - work and wife.
There are nice things too, but mainly in the beginning - when everything is new and exciting and shiny.
Be safe and wise.