In the abscence of heat there is cold
...cold only exists where heat?does not.
In the abscence of love there is hatred
...hatred only exists where love?does not.
In the abscence of light there is darkness
...darkness only exists where light does not.
In the abscence of God there is evil
...evil only exists where God does not.
It is quite simple.
Evil only exists in a heart where God is not welcomed.
He WON'T just make everyone love Him...because then, THAT wouldn't be "Love".
Just my random thoughts,