To make anything that is all Light without any Darkness is probably impossible. It helps with pains and headaches, and it is good for the heart, but if you take an overdose it can kill you. Electricity brings you many of the things in your life that can make you happy, such as light to see by, but if you put your finger in an electrical socket, you can kill yourself. Fire can heat your house and cook your food, but if it is misused, it can burn down your house. I think you get the idea.
Discrimination is the key.
It has come to our attention that there are ways the coils can be misused. What Bob Dratch is doing on his web site is being responsible and warning people. It does not mean that we have to abandon the technology, but rather learn to master it. You have learned to master your automobile and you use it everyday, even though it means that you may be harmed every time you enter it. This is a lot safer.