I can say ok prove he's not real?
No you can't. Burden of proof, for the umpteenth time. Look it up.
then prove where that first atom came from...
And god gets a free pass for his/her/its origin because...? Don't you realize that saying "there has to be a first cause" and attributing that to a god solves NOTHING?! If your Jesus can get away without having to have an "ultimate" explanation, then so can a natural occurrence.
You should really ask yourself why your satisfied with this bandaid "explanation" of a god, because it doesn't fix the gaping hole you're trying to cover up in the slightest.
Scientist that can do pretty much everything can still not create atoms...
Ever hear of the Large Hadron Collider? Protons (which are smaller than atoms) smashing into each other? It may not be "creating atoms", but it's definitely in the neighborhood. Also, scientists HAVE been able to create quarks, which are parts of atoms.
every thing in our body just happened to have a purpose and work perfectly
What planet are you living on? Our bodies are nowhere near perfect! And not all of our body parts have a "purpose"...like some of the ones that are left over from EVOLUTION, ahem...ask your 'intelligent designer' about that one...