To begin with, God doesn’t “want us” to experience pain. God doesn’t “want” anything. God experiences GodSelf through us, and knows GodSelf anew in that way. God does not come from “wanting-ness,” but from Total “Havingness.”
Has the human race lost control of itself? Is this just another aberration, or have there now been enough "aberrations" to make us ask: Are we really this primitive, this barbaric as a species? What is the problem here? What is causing all of this?
God is not a Super Being in the Sky, with the same proclivities and emotional needs as human beings, including the need for love and for revenge when love is betrayed or not given. God is life's Essential Energy. You might want to call that energy Pure Intelligence.
Life is long stretches and short spans. Life is remembering and forgetting. There isn’t anything that life is not. It is hilarious, and it is, also, from your timid point of view, horrific. It is a mixed bag, but is it really?
There is a preponderance of love in the world and in your life. You may be so involved in the troubles of the world and the troubles in your personal life, that you do not see all that which extends far beyond the troubles of the world.