Some people who know me are aware of my current "battle" with quite a serious illness. It had reached a point recently where constant pain, very little quality of life and various other things had almost caused me to give up.
I had accepted that maybe my "incarnation" in this body was maybe over. It was while reading The Satanic Bible by Anton LaVey, and another book about the Left Hand Path and a few other bits and pieces that made me stop and say - bullshit! This body still has some life in it yet, I haven't even been told what treatment the doctors have planned next. There is also still magick to add to any results medical science can "produce".
Conventional Religion and Mysticism give people a hope in a god who has their best interests at heart, even through suffering, and after that a brighter future in some kind of paradise.
The Mage relies on no such well meaning sentiments and pie in the sky theology.