I Don't Understand

I don't understand
Why poeple can't get along
When poeple get divorced over small things
Why can't stay together for life no matter
what

But most of all
why poeple stab their friends in the back
Why people pretend to be a friend
Why poeple prejudge others
Why people don't get to know someone

What i do understand is
Why friend support each other
The love poeple give out
The truth in a friendship
How hard it is to give turst to someone who has lost it