God has created a free world God created humanity as a free agent responsible for our actions. Nature too functions freely. Clearly we see something is wrong, it doesn't work right. I like to put it this way - freedom has gone haywire. We have used freedom to pursue our own ends, at times with great cruelty.
Nature too seems to mirror the madness of humanity.
The Bible tells us that the reason for nature's turmoil is a direct result of human rebellion against God. The point is a simple one, we are free beings. We might argue that God could help out a bit, but then any intervention on his part is an intrusion into freedom. For example, think of the situation where a person fires a bullet at a bloke and kills him. He could stop the person firing the bullet.