You're supposed to be kind to everyone, because you never know when you're meeting an angel.
Things don't have to be sane when they're normal.
If people knew who the angels were, they would be very nice when they saw one and would still do their same evil garbage when they thought none were around. Knowing who they are defeats the purpose.
Sometimes it has to feel worse before it feels better.
People will do and think whatever it is they have to in order to survive.
You can almost believe what you know is not true when you really have to.