The four reasons
This means we start with the fundamental building blocks of Being in Manifestation and step by step build our skills, perceptions and realizations like we do in every true discipline eg: music, medicine, sports, etc.
As a skill-based practitioner you know that even the deepest metaphysical truths do little for you unless you use them with skill, intention and discipline every single day in your life.
In a culture that inundates people with endless distractions, manufactured strife and shallow spiritual cliches, this commitment to living your Authentic Life Vision takes serious practice and growing understanding.
Other religious and 'spiritual' schools use a powerful mind control method in which they belittle your ego, your mind, your desires and your points of view as unenlightened, base or sinful. This approach makes people doubt their own minds and substitute the organization agenda for their own ideals and inspirations.
Ultimately both those methods dis-empower authentic expression and awakening.
So the third reason to train in the Luminous Arts is that this practice gives all aspects of your Being their rightful place, voice and honor in Creation. That is what being 'Whole, Complete and Awake' is all about.