I understand Vestigial, and there is maybe there is to much use of antibacterial products (?)...but as a Brasilian believe me since childhood I was expose to many things that people from 1st world was/is not. I'm resistant because I was exposed..
But there are some kind of nasty and sharing stuff that's not cool...and public places, hotels, spa, pedicure water container, etc situations. I think prevention is a good thing.
My bleach and water spray mix is always ready to shot and kill, I make sure it happens in my home.