[what's up]

There's a big difference between "I can't be metaphysically certain that God doesn't exist, but I see no evidence of him" (atheist) and "I don't know" (agnostic).

I don't see a whole lot of difference between "I can't be metaphysically certain" and "I don't know". The word "metaphysical" is beside the point.

Most agnostics also say they see no evidence of God.

[Johnny B.]

Prove to me that Leprechauns do not exist, and then I’ll be happy to prove that God doesn’t exist.