Thank you for all the information, which we should all consider well.
Honestly, my biggest problem with traditional media is that they are typically based upon natural resins, which must be dissolved in turpentine; and although you state that turpentine is "another scary product that causes absolutely no documented harm", I have to take into account the many reports that it does, such as this, from the National Park Service, in 1997...
www.nature.nps.gov/toxic/turpenti.pdf
...in which there are short- and long-term hazards cited with regards to respiration, kidneys, cancer, and reproduction -- hazards that are by most accounts significantly greater than those posed by odorless mineral spirits and alkyd media based upon them.
Nonetheless, I promise to keep an open mind, as I digest all this additional information: I promise not to base my decisions, as to the health of my art or myself, upon faith or cynicism but rather upon the facts, preferably from controlled scientific studies.
It is indeed my duty as an artist.