"Consciousness is simply the real time processing of sensory input and internal communication and monitoring. Our experience of reality is demonstrably constructed by the brain. When you alter the underlying brain function, you alter that construction. People can be made to feel as if they do not control their own limbs, or that they have extra limbs, or that sound has a color, that parts of the world do not exist, that their spouse has been replaced by an imposter, or that they are one with the universe. We can do all this by poking around in the brain." -Steven Novella
The easy problem is - does the brain cause the mind. From a scientific point of view, it does. The hypothesis that the brain causes consciousness makes many predictions, all of which have held up so far. The hard question is how does the brain cause the mind. That question is completely unanswered, which means, it is at this point where scientific methodology may be insufficient, and philosophical ideas can be debated. What we do not see is any phenomena separate from subjective experience that can not be explained by the brain and would require some outside will. IOW, we have no reason to suppose the mind and brain are separate other than the fact that we are ignorant of how the brain manifests consciousness. It becomes a case of filling in the gaps with an unfalsifiable notion, just as creationists do. The difference is, creationists are supernatural dualists, while panpsychism is naturalistic dualism.
The desire is on the side that wants the human mind to be something more than an emergent phenomena of the brain. The simplicity is in the fact that materialism does not try to go beyond what we currently know, its reach does not exceed its grasp. The dualistic view makes as many assumptions as needed to reach its conclusion.