I can't say it, so I'm writing it down instead.

Sometimes we forget that people's actions are largely based on their experiences (the good AND the bad).
We forget to take into account the traumatizing events of their past that are likely to be reflected on their current fears.
We forget that at the end of the day, they're human too.
When we do remember, however, we realize that we have wasted so much time and energy into being upset whenever people disappoint us.
It's okay.
We're human too.