I worked there for about 18 months, not at the airport though.
The place got to me after a while, I felt very trapped, after all it's only 9 miles by about 40. You want to go anywhere and it's a flight or a ferry. The tax is very low though, when I was there it was 15% basic, 20% top, and married couples could use the partners allowance (About 5K each anyway) (If the partner didn't work that is) Everything else is more expensive - leccy, gas, fuel, food, phone etc.
And you can regularly be trapped on the island for a week at a time with no one coming on or off. Just imagine what the shops are like then.
I would not go back.