You said: "if you believe in a god who is spiritual as opposed to material, it is hard to sustain an argument that that god would create a material world."
If a rock can make something happen with water, without any thought: meteorite crashes into the ocean changing the tides and eco systems, flooding landmasses etc. etc.
Why wouldn't a thinking, feeling (spiritual) being want to utilize its energy and power to propagate life? Again, it seems natural to me that such a spiritual force would want to make something happen, to create, and to animate the cosmos. How and when? I wasn't there. But I'm thrilled to be filled with wonder about it.
I am also filled with wonder by material phenomena. Inanimate objects can indeed produce wonderfully uplifting effects in the form of feelings and emotions. None of that is necessarily incompatible with the concept of a divinity which, while recognising our spiritual reality, knows nothing of our material bodies. But then that's just what I think, and like everyone else, I am almost certainly wrong.