Try to imagine putting yourself in the position of a person who has no background knowledge of Christianity, a person who did not grow up in a Christian home, never attended church, and has been indoctrinated in evolutionary concepts through the education system. Imagine a Christian who meets this person and tells him there is a God of infinite love who made the world and cares for us. All I see are children suffering and dying. I see people killing and stealing. Disease and death seem to be everywhere.
Nature is 'red in tooth and claw' as a poet once stated.
It's a horrible world. I don't see your God of love. If your God does exist, He must be a sadistic ogre. The problem is that this non-Christian is looking at a fallen world. When this person considers what is being told to him about the God of creation, he then, in a sense, blames God for the horrible world we live in.