The dark night has nothing to do with depression, and therefore nothing to do with depression-caused suicide.
At what point does ignorance of the proposition against whom one contends become culpable?
Really? So people who suffer terrible loss such as that of a child, dont blame God and even give up their former beliefs? I talk to people all the time who blame God for their situation, and even curse Him.
I know of one suicide, and I'm sure there's plenty more.