Science has proof, and also pokes a bunch of holes in the whole god thing,
Few things here:
1) Science has poked holes in specific religions, but not "the whole god thing." Religion isn't just Christianity.
2) This point is rather pedantic rather than supporting any specific argument, but... Science actually has zero of of what you would probably call proof. There is no absolute certainty in science, just "within reasonable doubt." Everything you learn via experimentation could be a fluke. The chances of that can be utterly miniscule (my computer merely running supports many scientific theories to a ridiculous degree), but the possibility always exists. (however, don't trust anyone who uses this as a reason to decry science, because denying inductive reasoning is plain nutty. Like I said, this is a pedantic point)
3) Furthermore, science relies on the philosophy of empiricism. That itself has a really big fucking gaping hole: solipsism. Ever seen the Matrix? What you see, taste, touch, smell, and feel is how you experience the world, but there's nothing saying those experiences aren't a lie. Descartes (the "I think therefore I am" guy) talked a lot about it and could only escape it to his satisfaction through religion.
So all that stuff can be negated by simply taking a different set of assumptions than the assumptions we make concerning empiricism and science. No matter what, you're putting your faith in
some unprovable, unsupported assumption. Empiricism is the big one. Inductive reasoning is much, much more reasonable but still inherently never an absolute certainty.