

Even if it is an illusion created by the brain, does that make it any less existent?
Yes. Or in other words:
If you see a mirage of a spring in the desert can you quench your thirst?
That better for you?
What exactly do you think consciousness is (or is not)?
Evidence suggests that “consciousness” is the mechanism that allows separate parts of the brain to communicate with other parts of the brain and coordinate activities. The hypothesis is this is done by the frontal cortex which is responsible for reasoning, decision making, and controlling voluntary movements. However, there is still much research required in Neurosciences before we have a solid theory and understanding of consciousness.
Did you know that the mother communicates to her eggs before leaving the beach? They also have a very complex verbal and non verbal way of communicating which begins even before they hatch.