The ancient Pythagoreans believed that numbers have not only quantity, but also quality them. If we skip forward to modern times, we can see that mathematics and sciences in general have developed using the view of numbers as quantities, and this view pretty much dominates how we see the world today.
Unfortunately, the popular view of psychic numerology is that it is nothing more than entertainment. Genuine, deep numerology focuses on seeing numbers as qualities, as symbols representing states of mind and states of reality.
Numerology is potentially the purest of psychic and metaphysical systems, but it's in baby shoes - we can barely understand counting to ten. If numerology and our psychic understanding of numbers were to develop to such a degree that we could understand mathematical formulas as states of reality rather than just operate with a representation of them, then a form of so called 'sacred mathematics' could be developed.
Such an evolved form a psychic numerology could help bridge the gap between scientific, technological progress and emotional, spiritual progress. (This gap is causing a lot of problems in modern society.)
Understanding numbers not only as abstract, distinct integers but also as ever-present, changing states of reality can help as greatly towards that goal. On a more personal level, numerology offers a way to give a more objective form to our subjective, psychic experiences.