Yes I do the same thing. I don't worry so much about clothing but definitely in the dairy and refrigerated sections of the supermarket, I shove my hand to the back to see if I can find a later expiration date than the one on the front. If I can't, I still buy the one at the back for the simple reason that in my mind, fewer hands have touched the container. Sometimes when there is only one of a product left on the shelf, I just don't buy it because this is the one that everybody else also left behind. Is it all in the mind?