"The very notion that sites that may or may not be symmetrical is vapid." obviously not the words of an architect.
Save the rancor. I never said that only asymmetrical buildings were interesting - I just said that symmetry was often problematic and that you referenced buildings that weren't necessarily attractive - they were all just huge and iconic - but big and flashy does not equal good design. There are of course thousands of boring, gaudy, and pompous asymetric buildings as well - they just don't typically shout their grandeur like a symmetrical building does. You seem to want every building to be a cathedral - I think modesty and subtlety are far more admirable qualities in architectural design.
The buildings you mentioned are technically symmetrical, but not in the classical sense. Dulles is symmetrical from the front elevation, but you can't see it symmetrically - the overall look is a wave that embodies asymmetry. Lake Point is a triangular site and its windows have an irregular grid effect. The Salk site has two mirrored buildings - but the buildings themselves aren't symmetrical. The buildings all use symmetry as a tool but don't adhere to a classical format which is presumably what witold is talking about.