While I agree with what you're saying, shopgirl, and it's true that stores can get away with putting the milk in the back of the store... when it comes to websites, webmasters have to be a little careful about this... because the "back" button is never too far, when the visitor cannot immediately find what they are looking for, or get the impression that they will find what they're looking for.
I know this does not necessarily apply to your site, but just wanted to put it out there
Sherif