I mentioned it in bypassing earlier. Dawkins had this TV series "root of all evil", I think it was. I loved it. I was a hard-core atheist at the time. I used to argue the same position as you're doing right now that atheism is "just lack of belief in God". I learned since that things are far more complex than this silly simplification. Anyway, when I just discovered this conclusion that atheists invented theism, it put a new spin on the "root of all evil". It suggests rather that atheism is the root of all evil...
(Of course I don't think it is, and I don't think religion or theism is either. Just an interesting twist of things.)