Those evil humans down on earth. I hate what they are doing. All this sin...
Since I am all-knowing I know exactly what the humans are doing and I understand exactly why they commit each sin. Since I created the humans in my own image and personally programmed human nature into their brains, I am the direct author of all of this sin. The instant I created them I knew exactly what would happen with every single human being right down to the nanosecond level for all eternity. If I didn't like how it was going to turn out, I could have simply changed them when I created them. And since I am perfect, I know exactly what I am doing. But ignore all that. I hate all these people doing exactly what I perfectly designed them to do and knew they would do from the moment I created them...

So here's what I am going to do. I will artificially inseminate a virgin. She will give birth to an incarnated version of me. The humans will eventually crucify and kill the incarnated me. That will, finally, make me happy. Yes, sending mself down and having the humans crucify me -- that will satisfy me. I feel much better now.