Eighty plus here; worked as a tech. and Research Chemist for 16 years, painted houses for about four (including lead paint); Environmental Attorney for about twenty five years; been in Uranium mines, chemical plants handling NaClO3, Yellow Cake, Uranium hexafluoride, smoked cigarettes up until 1982 (20 plus years), etc. Like I said before, having a background in Biology, I have always tried to limit exposure of myself and my family, to chemicals of all kinds. Chemists and Engineers are pretty blase' about such exposure; Biologists not so much. I say you are foolish if you don't limit your exposures...for instance, I have lived in this house for forty plus years and have never had it sprayed. When pregnant, my wife didn't smoke, didn't drink, didn't paint as a hobby, or otherwise expose herself to anything unnecessary.
Bottom line, I think it's paid off over the years...and FWIW, my best friend of sixty plus years recently passed away from lung cancer...he smoked cigarettes for nearly sixty years; didn't think they would hurt him.
Oh, BTW, you should read the Court's opinion in the McDonald's hot coffee case...it might adjust some preconceived notions. It was interesting that McDonald's had been cited several times by the Health Department for keeping their coffee unreasonably hot; they thought it kept it fresh. You give near-boiling hot coffee, to an elderly lady, in a paper cup, at the drive in, and are surprised when it collapses and scalds her?