You said: "No God could take part in the kind of cruelty inflicted on the vast majority of humans."
I do not believe that God takes part in it, but He does know about it, and sits idly by.
What people make of that is there own choice.
As I am sure you know, religious people make all kinds of excuses for their God. It is always man's fault, even when it wasn't something man or did wrong to bring on their suffering. How can people be so blind? It's called indoctrination.
Whenever something good happens it is always attributed to God, but when something bad happens it is never attributed to God; but if God is responsible for everything in existence you cannot make that work unless you are illogical.