The reason EY sees so much of my eastbound business is because I can stop in the UAE on the way back and see clients there. Even if I don't need to stop there, I still do because I'd rather fly a 7 hour leg, have a night in AUH or DXB and then do another 7 hours flight than spend 12 hours watching the same 4 films.
Plus the fact that a LHR-AUH-KUL-AUH-LHR itinerary in J is often <£1650 in their sales, and that includes a car from the Midlands to LHR, a car from AUH to DXB should I want one, a car back from DXB-AUH and then a car from LHR to the Midlands. Saves me £50 in fuel, £150 in parking, and £100 in return taxis.
The downside to QR, for me, is that I don't like DOH anywhere near as much as AUH or DXB.