Criminals want to loot everyone, the enemies of Humanity want to annihilate everyone.
Both to loot and to annihilate you must dominate.
Dominating through force is expensive and dangerous: torturers must be paid lavishly, and both them and the slaves can revolt at any moment.
Far mor convenient using dependency.
Staying alive induces the demand for real survival factors, and manipulation induces the demand for artificial survival factors.
So it is enough to take control of these survival factors.
And then blackmailing through their scarcity: if you want to survive one minute more, obey.
Amongst other things, from the perspective of domination through scarcity the function of materialism and the value of spirituality are evident.
And this regardless of truth: whether we are mortal brains, or we are immortal beings, the matter is the same because our response depends on our point of view.
When criminals and enemies of Humanity point some kind of weapon at us to blackmail us through the scarcity of life...
If we think that our existence is limited to this life and this body, and therefore scarce, our response will be, "I obey!"
If we think that our existence is unlimited, and therefore infinitely abundant, our response will be, "Screw you!"
It becomes therefore clear both that criminals and enemies of Humanity have an interest in materialism, and that spirituality is ethically superior to it.
And it doesn't end here: if we think we are immortal beings, our response will also include what has been well summed up in this quote (available here):
“And, you know? Eternity is a very long time and it is ahead of us. …
I am confronting you today, but you will have to confront me some day and pay for your crimes. And pay you will.”