Hmm, this reminds me of Descartes. He had as argument for the existence of God that he was necessary per itself. That the World can't exist without him and that men can't conceive it without him. But as my philosophy teacher pointed and I noticed, this argument is only valid to religious people. People who even doubt the existence of God don't see him as a necessary thing.
Which brings me to my own thoughts on the matter. If I remember correctly, it was St. Tomas de Aquino who demonstrated the existence of God through the 5 ways. God is the cause of all things, the original motor of all movement, I don't remember what else and, finally, perfect in all ways and senses.
Which means that God has all virtues and perfections in the highest degree. Then, God can't have created a World as ours, with imperfections and even evil. For when the best of artisans produces one of his works, he doesn't make it flawed in any way.
If God put sin on the World for any reason at all, he couldn't be so perfect, for only cruelty is a motivation to deliberately produce a flawed creation. Therefore, either there is no God or there are several Gods, as I see it, ones having perfections lacked by the others and viceversa.
What I want to mean is that, in any case, I don't consider that God would have anything to do with the conundrums of nature and psychology that are taking our time here.