What I've noticed, when you try to keep "kids" ignorant of something in the hopes that they won't do it, they tend to do it anyway, just with less information and understanding.
Well, I wasn't just talking about kids.
Trying to protect us from ourselves is a growing trend worldwide.
I won't comment further on that though, as it is a topic for the Outside.
As for me, I don't observe any rules when it comes to food dropped on the ground.
I'll eat a slice of pizza if it's been on the ground for 2 days.
And I believe in accumulating germs rather than avoiding them.
I don't wash my hands, I lick them.