How to easily defeat any argument for God

[Acrobat]

In my view, what's taking place, is that we see a non-natural/immaterial Good, and it's through this that we see things like cutting a babies head off as bad, or doing things conducive to wellbeing as good.

Cutting a babies head off is bad because of what it entails, and you have evolved as a member of the human species to see it as such.

It's not a problem at all for non-theistic naturalism. The problem is that you're not satisfied with any naturalistic explanation, but this is a psychological problem on your part, not a logical one.

I have evolved as a member of the human species to see. To recognize that that certain things outside of my mind are real, like the sun, the room I'm in.

I can recognize the natural facts of a babies head getting cut off, all the parts that went into the actions, the various brain states etc.. I can also recognize an objective badness, that is neither a part of my brain state, nor in any of the scientific facts surrounding this. 

We have evolved to recognize an objective non-natural/immaterial/transcedent moral reality not reducible to scientific facts, or brain states.