Gehenna
You seem to have overlooked the rather salient fact that the islanders are as British as you and I, with right of abode in Blighty should they wish.
Indeed many Saints do, and also help shore up the economies of Ascension and the Falkands.
The airport was an investment not borne out of luxury but indeed as a step to promote eventual self sufficiency. The weekly shuttle will now facilitate cargo such as the prized local crayfish catch. And tourism can only grow, now that the pricey time consuming sea journey is no more.
One-way travel time of 5.5 days, with regularly not so much as a seabird let alone other shipping to interrupt the monotony. If you're on island and need serious medical treatment, the airport is a boon whatever the weather restrictions.
And yes, its a lovely place.
Cooch