It takes a long time, but God dies too - but not before he'll stick it to you

Idea for a short story I'll never write:

A man doesn't believe in God. He continually tries to prove this to those around him, but no one will listen. He gets so fed up that he starts to lose his mind. Then, he has a brilliant idea to prove that he is right. Unfortunately, if he goes through with his plan, there will be no one to see that he was right after all - himself included. His plan is this: find a way to destroy the entire Earth and everyone living on it and himself at the same time. Let's follow his logic. God has a plan for the universe. Specifically, God has a plan for the Earth. Even more specifically, and depending on who you talk to, God has a plan for every human being. Furthermore, God wants to redeem his creation, probably by sending Jesus back for all those who follow him. If our unnamed hero (villain?) devises a way to carry out his plan, along with a number of backup methods just in case, surely God would intervene to save his creation. If he failed to do so, wouldn't this prove that God doesn't exist after all? And if he did intervene, we would then have absolute proof of his existence, which would also benefit humanity. But of course, the dilemma is contained in the fact that in order for his plan to work, our hero would have to find a way to kill every last human being, otherwise God's creation lives on and he still has an opportunity to fix everything. Thus, our hero's whole plan becomes moot.

...doesn't it?

God is a woman and the woman is an animal
That animal's man and that's you
Was there a need for creation?
That was hiding in a math equation and that's this:
Where do circles begin?


Oh, and you should all read this book.