I've never quite understood why Airbus pursued the A380 in the first place. The demise of the jumbo airliner (i.e. 747) had been predicted for nearly two decades now. Airbus was estimated to have spent 25 billion Euro on development, and nearly all the production A380's were sold at a loss. Yikes...
They thought it would be super low seat cost on the huge routes from the mega hubs. Unfortunately, there just aren't THAT many major hubs, therefore not that many routes to fill with an airplane this size.
The other thing that hurt it was infrastructure. A lot of even very large airports would have had to upgrade runways and terminals, and that is a lot of expense for a couple airplanes a day.
It does what it is supposed to do, and is a good airplane from what I've read. But there just isn't a market for more than about 200 of them, and that's not near enough to justify the production costs.