sneaking a free refill at 7-11 is not "robbing".
You say that. Not realizing all the people who are hurt from you "free refill".
The issue is not as much on what you do but the effect that you do it.
If you guess someones password to peak someones Facebook account, vs guessing their password to access their bank account.
Or you can try to rob a store at gun point, or with breaking and entering, or you can do shop lifting, or you can just abuse a privilege.
It isn't the action but the scope.