Fluoride is toxic wate byproduct & even the CDC admits that any beneficial use is from topical use, not ingestion. Those who wish to apply topically still can, but the rest, especially those in poorer communities that can't afford bottled water, have no choice to have our lifespan and health reduced by it. Many areas now ban it as research proves its toxicity.
We have been brainwashed into thinking it helps prevent tooth decay, but this is a myth perpetrated by industry seeking to avoid waste disposal costs. Fluoride is an unprocessed, industrial waste-product from the pollution scrubbers of the phosphate fertilizer and aluminum industry.
Most developed nations, such as Japan & 97% of western Europe, don't fluoridate water. WHO found no difference in tooth decay in fluoridated nations.