<<Why do Architects ALWAYS have to be differant.... >>
A contractor asked me a similar question years ago, and I explained to him that engineers drew the same detail for each project the same way until they found a better solution. Architects drew the same detail differently for each project, for the hell of it, it's in their genes. Besides you never know what's behind Door No: 2 until you look. This might not always be the best approach, but it sure is more interesting. It's sort of like you spelling "differant" in a non-conventional way....it keeps us on our toes.