Are we too clean?

We are back to a practical subject again today because I've been thinking about the word "germaphobe" and it scares me a little. I've come across this word a few times recently and I want to comment on it.  We all know it makes good sense to keep a clean house, to raise children to wash their hands before they eat and, in general, to maintain good levels of cleanliness in the home.  But you can