@LaChasseuse It's very true that some people are tired, stressed and confused. Modern life is hard, for sure.
Sadly, It's also true that some people are just appallingly rude, unnecessarily aggressive, and entirely unapologetic when they're politely informed of their mistake.
@woodpunk One may hope that when a person in that state has had some rest and calmed down, that they will feel sad about what happened.
I honestly believe that nearly nobody is just "like that" - there will almost always be extenuating circumstances. Sometimes you get home and wonder "what got into me?"