Not everyone turns their backs. I think we have compassion. At least, some of us.
But we're not all powerful. Even someone who does a lot of good can't stop war or hunger or abuse instantly in the way an all-powerful being could. We can't cure all diseases with a wave of the hand or sober up every drunk driver. There's so much pain and suffering and if some being could stop it and chooses not to, that seems cruel.