I agree with your post and would add: breast feeding.
Not that I have anything against breast feeding but there are fanatics out there who will starve their infants rather than let them drink some formula along with the teeny trickle of breast milk some of them are only able to produce.
The High Priestesses of the Breast Milk Only religion are also known as Tit Nazis.
Lets just say my wife had a few choice words.