Once when my daughter was an infant, it was bitter cold (below zero) in Indiana and there was no "full service". I locked my car, walked maybe all of ten feet to give the gas station guy my cash. A policeman was on the other side of the pumps and he yelled at me to ask me if my car door was locked. I said it was - he said "kids get kidnapped so fast." (He had just recently worked a case and it was on his mind.)
I was SHAKEN. I know it was a moment, and I know my car was locked and it was fifteen feet and less than a minute and I had "done nothing wrong" - but he was right and I never did that again, even if it took longer to get her out of the car than to run and pay.
I can't see how ONCE YOU ARE WARNED, that you can rationalize doing it again.
We all make mistakes, but I should have clarified and said "BUT NOT THE SAME MISTAKE TWICE."