>>1838598Materialism is epistemology, choice in believing it is ethics. Trying to prove why you should do something is outside the direct scope.
That said, we can take ethics materialistically, so, "why, given my specific existence as a human (i.e. being a material being, whose entire experience is mediated materially, and who currently holds certain values, embodied in various axes, circuits, systems, and so on, given to us both by our biology, our socialization, and their interaction…), should I believe in materialism?"
The answer is because humans have needs to meet and values to fulfill that require making specific interventions in reality, and materialism is the only philosophy that is not either against or neutral on the claim that we can produce knowledge.of the world (because we live in it and are ourselves material, and learn via interacting - idealism can't fully accept science even though some eclectics want irrationality on one side (for special cases or to fill gaps in knowledge), and science on the other) because it posits either an irrational world governed solely by gods whims, or that our experience of the world is not direct, because our consciousness is otherworldly and not material). Because of that it is the philosophy behind the practice of producing knowledge. The knowledge that you need in order to make accurate interventions in reality to meet your needs etc.