The most disturbing image I saw in my life

[Objectivist]

It's not me, it's part of me.  I am more than my nervous system.  I am my body and I am also my mind.  The fact that you are impressed by the complexity of our bodies is not a warrant for believing in a deity.  Pictures are not arguments.  Incredulity is no defense for believing in the supernatural.  You ask how can we see this and still be atheists.  It's a non-sequitur.  I'd like to ask theists how they can accept such faulty reasoning?  The racism, toxic behaviours, and killings that you lament are a result of such faulty reasoning or the failure to reason at all.  Our brains and our nervous system are wonderful things and they give us the ability to do wonderful things but when we fail to use them or use them in the wrong way we are capable of horrible things.  

We do not replicate our own creation when we create something.  There is a huge equivocation here.  When we create something new, we create it by using existing materials.  The kind of creation you are talking about is creation from nothing pre existing.  It is essentially wishing things into existence.  The two are in no way alike.  

There isn't a god.  It's a fantasy.  But if I were to find myself in from of this god he better clear his schedule because I'll have a lot to say to it and it won't be short.  

It's interesting that you ask us to use our imaginations.  I know of no other way to apprehend your god but to use my imagination.  But, there is a fundamental distinction between what is real and what is imaginary, one that is identified by the primacy of existence principle. It's a principle you unwittingly use and reject at the same time any time you make a claim about your god.  I think you should reconcile that contradiction before you go presenting arguments for your god.

It includes your brain; so it is you.
We can't runaway from it. The Nervous System needs a body to work; just like a firm needs a Manager.

Without the manager; the company would fall.
Without a Nervous System; the body would fall.

That's why a "head shot" kills you immediately.
That's why a severe trauma to the Spinal Chord immobilises you immediately.

The rest of the body is a mere resource feeding the Nervous System.

No, I am my mind, my brain, my nerves, my actions, my thoughts, my heart, my lungs, my endocrine system, my bones, etc.  We can't reduce humans to a nervous system and no matter how complex and amazing it is it's not a warrant for believing in a god or the supernatural.  And if you say a body is required to be conscious then that leaves you god out.  It is said to be spirit, whatever that is, without a physical body.  You see the body as a resource to feed the nervous system but I see the nervous system as a means for the body to feed itself and do everything else.  It's not the totality of me.