I've had this long, ongoing debate with a nut-job at my work.
We got onto the question: "Why does Australia include fluoride in our water systems"
Water_fluoridation_in_Australia
Australia is one of many countries that have water fluoridation programs currently operating (see Fluoridation by country)
So his argument (in a nutshell) is that Australia cares about the society, hence it's a form of incentive.
My argument is that this is a load of shit. Why would the government spend $X / year to add fluoride in the water system. If it cared about the society's dental woes, then it would subsidize various denture benefits such as dental costs.
There's a theory that excess fluoride makes you less resisting to change, gullible, etc
So you want us to save a smaller amount on fluoride so that we can spend most of our tax dollars retrospectively fixing teeth and funding dentists' lifestyles?