Not disputing your take on chemicals in our daily lives but with the advent of modern medicine saving alot of people who would have died off before they reproduced.
This allowed hereditary diseases a “foothold” in the gene pool.
It did and that has been pretty well understood for decades. Truth be told, many of us (me included - massive rupture of appendix as a teenager) would probably not be here today. Few people understand how many of our forefathers died of nothing more than an abscessed tooth causing a fatal infection!
That is proven true by life expectancy studies.
It is interesting that life expectancy is now allegedly decreasing and that should concern everyone.
How much of that is lack of exercise, processed foods, accidental death (OD’s etc), and ethyl-methyl bad stuff will be debated long after you and I have met our maker!