For the same reason we have the Brad Pitts and the George Clooneys, it's just part of human nature to idolize stereotypes.
Forms in nature are a byproduct of a reciprocal action between a given material and the conditions of the environment. But in architecture, the process is the direct opposite: First you decide on the form, and then you think how to build it in reality.
The 3D-printing technology has been developing at a very rapid pace.
How can we reinterpret 3-D printing in a way that suggests a new design language?
If you think about it, the printing press allowed everyone to print books - it democratised the printing of information. For the first time, we could all print.
Look at spiders. They use about eight different properties of silk for different functions. The spider is like a multimaterial 3D printer.