The soaps and such are because my skin is sensitive to almost everything, so I avoid chemicals where I can for that. I buy organic toothpaste because of the fluoride, you can believe what you want. But if fluoride can be used to make a bomb then surely it cannot be good for you.
I hear some organic toothpastes have zinc oxide in them. You can believe what you want, but if zinc oxide is a component in batteries, fire handicapants, cement, glass, lubricants etc; then it could possibly be that our universe which contains 90 basic elements naturally and some 27 man-made elements which can be combined in seemingly limitless ways, has some basic molecular similarities between two completely loving different objects.