Reminds me of the Hygiene issue.
Of course good hygiene is prefered to being careless but some children(sdome now grown adults) are now thought to be a more risk due to the fact they have grown up in a clean enviroment.
My great gran (a cook by trade) was said to of gone along with the little bit of dirt never hurt. Which many phills seem to follow both far healthier and have far less allergies than the keep everything clean and safe set.
How will you bulid up your immune system if you never come into contact with smal amounts of bacteria etc?