Theists: how do you account for psychopaths?

[Mr.wizard]

There's that 'net good' comment again . . .

So it's okay for these awful things to happen if it leads to a 'net good'?

I don't know what you mean by "it's ok". Tragedies are always a horrible thing, and never ok things. I certainly don't think what happened to me was ok. 

But we don't know what the long term consequences would be, both in this world and in the next, eternal one, if this world were one where God always stepped in to prevent anything and everything that would cause us suffering. I assume things would overall somehow not work out very well, otherwise He would do it.

3 million children die of hunger each year, you're telling me that this necessary for some greater good? Why can't God just eliminate suffering and death altogether, it seems to me that God if he is all powerful could reach maximum goodness without all of the death, pain, and suffering.