Decision is totally yours to make - you probably know the answer already.
And yes - I have been through the selection board recently.
No problems working for the airline - very little to fault.
Do you want to live in Dubai for the next 20/30 years?
Where are you going to go if you need to come home 'cos you (or more likely) the wife and/or kids don't like it or are too far from mother/granny?
Were you happy with the accomodation?
Will you not mind going on trips that disappear for several days? Trips will be getting longer as they introduce the A340s to stateside destinations.
Can u suffer 48 Celsius for four months in the summer?
Best of luck.