OK, if you think you understand the nature of quantum behavior than I will leave you to it, I guess.
I'm with Polymath on this.
Science can only explain phenomena down to a certain level. If one continues, like an 8yr old child, asking why, why, why questions at each level of explanation, sooner or later you get to the bottom at which the only possible reply is "It is just is, according to the model we have, which is based on what observations tell us". The goal of science is to make predictive models of the physical world, not to answer metaphysical questions about ultimate meaning or understanding.
This is no more of an issue with QM than with General Relativity, which is equally counterintuitive and which, like QM, dissolves eventually into mathematics rather than nice 3D pictorial concepts.
It seems to me there is a danger of getting sucked into quantum woo. Some rather suspect people have latched onto obscurantist descriptions of QM to provide a specious underpinning for all sorts of un-evidenced ideas. I have yet to read a convincing account of how quantum processes really do anything special in the brain.
But then I am a bit of a refusenik on all this "consciousness" mystique in the first place. It seems to me that treating consciousness as an entity, a "thing", is making a category error. I regard it as an
activity of the brain - the functioning of the brain's operating system, if you like. I suspect we shall come to regard Cartesian dualism as a philosophical wrong turning, driven at the time by lack of understanding of what we now call computing.