If everyone does it it can get very expensive.
There is no such thing as a victimless crime, look at poor Rutherford2, racked with guilt.
I once ate a dessert in a restaurant and wasn’t charged for it. I realised this as I sat in my car to leave the premises and for a moment I was tempted to leave. Then I changed my mind and I wondered if the manager might actually let me have it for nothing anyway if I told him of his error.
I returned, saw the manager and he said “because you’ve been so honest you can have it on the house.” He was heartened that honesty still exists and I got off Scott free, I mean without having sinned. All was well.
It’s not difficult to live within the law, a life of crime does not pay.