When people are assholes, it's either because they've suffered abuse, or because their physiology is different than yours (unless you're an asshole too, in which case, I'm talking about you here... yes, you.)
Check out Beth's story. The abuse she has suffered is severe- so severe that people noticed and got help for her. However, assholes have generally suffered abuse on a much more subtle level, which makes it so much easier to deny and ignore, and SO much harder to address. Poor assholes.
It's a great story... go watch it here:
Child of Rage
1 Oh, what joy for those
whose disobedience is forgiven,
whose sin is put out of sight!
2 Yes, what joy for those
whose record the Lord has cleared of guilt,
whose lives are lived in complete honesty!
3 When I refused to confess my sin,
my body wasted away,
and I groaned all day long.