Kate, you're the only one who keeps talking about IQ. There are many smart people who are uninformed, and therefore believe things that are untrue. It sounds like your head is still filled with creationist garbage. The very statement "god had to do this or that" does nothing but hurt your argument.
Let me ask you: what if we did insert god into a gap in knowledge that was quite important. Millions of people will build their faith on this, and wave it in the Atheists' face as proof they are right.
Science is always progressing, always asking the tough questions and following them wherever they lead. Now what happens when the gap that we so readily inserted god into is understood? Not only would we get to pull god back out and replace him with KNOWLEDGE, but the faith of those millions will no longer have any basis.
Yet another reason why the non-theist view is the only one that really makes sense.