My twopence worth:
I have no preference between Boeing and Airbus products, nor for that matter the other smaller manufactures out there. They all seem to produce reasonable products that do their jobs reasonably well. some are more suited to certain routes, and certain airlines, and some pilots seem to prefer the differing driving techniques, but at the end of the day, looking from a business perspective, I have doubts as to whether the A380 product will be a success in the same way that other Airbus products have been -> A318-321 for example. Certainly don't see it being as successful as the B747 has been for Boeing.
The A380 does have a market, as has been pointed out above by others. But I question how big it is. Passengers have historically demonstrated two main preferences for travel choice - namely price and frequency. Boeing 767/777 & 7E7 and the A330/340/350 will continue to offer the benefits of frequency on the majority of medium, long and ultra long haul, and it is only where slot contraints and time difference take their toll that the A380 will reign supreme - the LHR/HKG pair being the prime example, although not alone.
A380's biggest hope will be if it can do what Southwest and Ezy/Ryanair have done for short haul in terms of reducing cost of travel - and then pax will have to put up with squeezing 750-900 on one aircraft at a time - not with Casino's and gymns...