Really our opinions are just that of people who like planes, most people couldn't care less what plane they catch, as long as it's quick and cheap. And what i'm trying to get at here is that if the turnaround times for the A380are very large people wont like it. Who wants to wait for 2 hours to get on an aeroplane.
So most people will fly on the aeroplane then airline booked them on, they have no choice really, we pick the time and date and the airline picks the aircraft