Our world is actually isometric. Why have we never noticed that? Because we see everything in perspective. Perspective is an illusion, a distortion of reality that we see because our eye has acquired this property in the evolution process. It helps us to orient ourselves in space, to determine the size and distance of the objects that surround us.

When we look at the rectangular desk surface, we see a decrease in perspective, when in fact the desk always remains with the same parallel sides. This is a feature of the real world that we do not really perceive.

That's why I like isometry, it helps to represent the world in a more realistic way.