If I can scan the item and then place it in the bag, I have no problem using self checkout machines. (The local CVS and Harris-Teeter stores, for example.) If I

If I can scan the item and then place it in the bag, I have no problem using self checkout machines. (The local CVS and Harris-Teeter stores, for example.) If I scan the item and can't bag it; but, have to put it on a belt and let it go to the bagging end? I rarely use it. Why? I want to bag my groceries without worrying about bagging those of the person behind me. If I scan everything, pay, and then start bagging, the majority of the time, the person behind me starts scanning their items before I'm done bagging.