Can't offer anything in regards to flying ( I serve the tea and coffee down the back)
But having lived in Abu Dhabi then Doha you can not compare the 2. I had a MUCH better quality of life in Abu Dhabi.
Eating out and drinking cheaper in UAE and MUCH more variety. I really miss sitting out side in the beer garden in the cooler months.
Groceries cheaper in Abu Dhabi. Pork and booze readily available. You have your choice of booze shops and can bring in duty free.
Nicer beaches.
Traffic better in Abu Dhabi.
If you have a wife things are MUCH more relaxed for women.