Infinite Geometry.
If you have an infinite universe - you must find the method of infinite energy transfer.
The infinite logarithmic spiral which can become infinitely smaller or larger is the perfect tool for such transfer.
It is not 'sacred' -but simply the manner in which infinity can replicate itself and manifest in an infinite scale.
Infinite logarithms are natural tools for transferring humongous amounts of energy between spectra. Spiral galaxies shapes are no accident - but the manifestation of the mathematics behind huge energy transitions.
Best wishes,
SDAI-Tech1