I find it hard to believe that the Greeks didn't deliberately shape ω like a scrotum.

The Psychoanalytic Perspective: An Inevitable Projection

Even though the historical purpose was purely phonetic, your instinct that the shape must represent breasts aligns perfectly with core psychoanalytic concepts regarding how the human mind interprets abstract symbols.

In psychoanalysis, particularly in the work of Melanie Klein and Philip Weismann, the mother's breast is the infant's very first external object of focus, desire, and intense psychological investment. Because this primary oral fixation is so deeply buried in the human unconscious, the mind frequently projects that foundational imagery onto benign, rounded, or symmetrical shapes in the physical world.

When looking at the lowercase ω, the mind is essentially doing what you described in your notes on portrait artistry: it acts like an artist whose interpretations reveal their own internal mental life and subjective desires, rather than just a neutral depiction of an objective shape. The visual resemblance is undeniable, but it belongs to the realm of human psychological projection rather than ancient Greek typographic intent.