I have never lived with "fear of punishment". Of course, I am also agnostic, so I can't relate to the "fear of God". But you don't have to have that fear to do the "right" thing when it is cut and dry. We all know what the major "wrongs" are. There may be some grey areas (especially concerning personal relationships). But, for your example, we all know that you have to pay for coffee when you order it.
I have been told before that I am "honest to a fault". As an example, my husband and I went to a home improvement store. Some of the things that we were buying were miscellaneous bolts and such. The cashier decided to be lazy and not look them up and just stuck them in a bag (this was after she fumbled through a book of pictures of different bolts and stuff). I asked her if she wanted more info, and she said "it's not worth it." So, I paid for the other things, then took my bag up to the service counter to pay for the other stuff (which was about $20 worth of stuff). I couldn't leave the store even though the cashier basically gave me a "free pass".
So, I guess that would be with the "sense of right and wrong" approach.
How many people walking out with a $1.00 or so of "free" stuff does it take before the company loses too much money to keep everyone employed? It might seem small on an individual basis, but it becomes an issue when you consider the whole picture.
imajinit, where do you get the $.50 cup of coffee? You can't get a cup around here for under a $1.00. 