It is interesting to note that there are no straight lines in nature. So essentially geometrical looks are a human invention and are anti-thesis to everything else that is created naturally. The closest straight line in nature is the visual perception of the horizon, but even this is a long arch that looks like a line due to the distance and size of the horizon.
And this indeed shows some extreme insight into how the human brain has been wired. This shift is more in the industrial era over the last 200 years where we have taken over our planet to bring standardization, repeatability, order and straight lines are part of that shift and one that propagates this thinking.
How do we evolve as a species from this left-brained thinking to be more artistic beings driven by right-brain abstraction or at the least have the left-brain thinking be influenced by some abstraction to improve our sense of aesthetics? And perhaps that will make us better humans?