I worked on Crest in the sixties. I've seen what fluoridated toothpastes have done to virtually eliminate childhood caries.
As children, we played with mercury. Yeah, it's toxic. But we knew better than to ingest it.
I've been a farmer. I understand how hybrid seeds and genetic modifications have increased yields, reduced pesticide and fertilizer costs, while improving nutrition -- worldwide.
And I've used Roundup by the truckload. It works great -- without the toxicity problems associated with most herbicides.
You live your life. I'll live mine.
But you are poisoning mine by living yours.
Roundup's active ingredient, glyphosate, is actually devastating crops and human and animal health around the world, even when the exposure is restricted to residues leftover in the soil.
There are very good reasons for not putting fluoride in the water supplies. It is a drug. If you wanted some to ingest, you'd have to get a prescription. And there are good reasons for why we don't purposely add any other drugs to our water.
And yes, mercury is toxic.