Nicely put, DG. I made the below comments (with slightly different wording) on another thread, but they bear repeating here:
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Occultism is more about the belief that nature, and the various entities/personalities that inhabit it, can be successfully manipulated by humans into granting said humans some favor.
In short, all of creation is humankind's personal vending machine, and the whole magic thing is just about learning how to use exact change.
Christianity isn't a religion of manipulation - it's a religion of ethics. Our relationship with God is based on our ethical standing before Him. No amount of relics, or icons, or potions, or incantations can change that. God is not some impersonal force that we can manipulate if we're skilled enough. The occultist's beef with Christianity is that it places humankind permanently subservient to a single diety, instead of allowing them to pick and choose their leaders (and allegiances), as if they were simply voting for their next senator.