I enjoy kidding people about their invisible friends. Even I have one: The Flying Spaghetti Monster, FSM. But the difference between my invisible friend and your invisible friend is measured by how we invoke them in our daily lives. I do not pray to FSM, nor does FSM act like some supreme being lording over the earth, picking who lives and who dies, and FSM doesn't answer prayers, unleash hurricanes, tsunamis, or earthquakes because of how people try to live their lives.
We are all used to seeing the familiar icon of a red circle with a red slash denoting "don't." Only this time there's nothing there but the invisible friend. Combine this with a list of the truly horrible things said and done in the name of one's god provides all the more reason why common sense must prevail.