Ordinarily, this is where I'd make some statement. I don't think there is a need here, because Tim answered his own question right after he asked it.
"You say that we Christians have no "proof" that there is a God. In a sense, that is true. Scientific "proof" for the existence of God may not exist (I think that is debatable, but for the sake of the argument, let's assume that it is true), at least not to your satisfaction."
Yup. Seems you understand the answer very well. You even drive it home with this:
" I do think that a belief in God requires "a leap of faith.""
Well, it seems my work here is done. The atheist simply does not take the leap of faith you do. The atheist prefers to stand on the ground of reason and logic, which is on the other side of the leap you take to believe.
Oh, what the heck. That post is too short. Here goes.
You are trying to shift the burden of proof to the atheist. You cannot. Atheism is the default position. No one is born believing in a god. We are all born atheists. It takes instruction, or indoctrination, to believe in a god. You make the positive claim that god exists. The burden is on you to show this god is real. Without the evidence you admit you do not have, there is no rational reason to believe a god exists.
For example: let's say I claimed to have a dragon in my pants. (Did you read my posts like this on EA?) I can hear it roar. It has smelly breath. I can let you listen to the roar and you can sniff the stink. Have I proved to you I have a dragon in my pants? The roar and smell are observable scientifically. Why don't you think the dragon is real?
Further, let's say I claim all the things you attribute to god are in fact the products of goblins. Goblins tell you what is right and wrong. Goblins put the matter in the universe. Goblins cause pain and love. Prove there are no goblins.
The atheist dismisses your god, and all other gods, deities, and supernatural things, as easily as you dismiss my dragon and the goblins.