I've come to believe that humans are only really responsible for their behaviour when present, and then their behaviour is compassionate and kind. Most people, most of the time, are more-or-less running on automatic, like meat-robots.

In other words, if they are asleep they're blameless and if they are awake they're harmless.

I'm not claiming it's true, I'm just saying that it's helped me to be more forgiving and easy-going.