Hmmm, so your saying that if you are worried about bacteria causing tooth decay, just drink some fluoridated water? The fluroide will just kill the bacteria and your teeth will be ok?
Well, the human body depends on bacteria. We have 20 types of bacteria in our mouthes alone. We have other bacteria in our gut that are essential to digestion, and yet more bacteria living on our body that simply protect us for more dangerous microorganisms. And millions of years ago, bacteria entered our (animal) cells and became a permanent part of them in the form of mitochondria. So its not a good idea to try to kill them.
If you choose to overlook the fluoride/IQ paper, thats your choice. I'm going to give it a little credence. And who knows, maybe your kids would have been geniuses if you hadn't made them drink all that fluroide.