This is the A380 by Airbus, the largest passenger aircraft in the world. We actually need them this big?

I would think one of the lessons of September 11, 2001 was to realize as sophisticated societies we need to view our infrastructure as potentially dangerous. I know people don't like to think about such things, especially those traveling on aircraft, but, realistically, the Boeing Dreamliner is a design human beings might actually be able to live with both environmentally and as an issue of National Security.