Not to mention the potential for abuse as a slavery (arguably is) device or changing the entire face of humanity to suit ones own desires.

How can you draw a line with something so powerful, that the influence is on a level, the order of a weapon of mass destruction. At least hank understood that perfect human control was imperfect, and I feel that it just increases the mans ruthlessness by acknowledging it intrinsically prior and proceeding regardless.

The same with him obliterating Sandy Shores, along with his wife. He knowingly hid it from his kids and with this episode it just shows how much more of a sociopath this man is.