Why Agnostic?

[Tiberius]

Erm...

I don't think the existence of god is unprovable, only unproven.

This is a complete contradiction with what you just said

Holds God’s non-existence as provable - NO, only highly improbable and (depending on the specific god concept evaluated) in most cases a highly immoral concept

Either you don't think the existence of god is unprovable (and thereby think it is provable...double negative remember), or you think the existence of god is unprovable.

As for certainty, I am talking about relative certainty, not absolute. I'm near enough 100% certain about most things I do (for instance I'm 100% certain I will not get shot by a sniper when I open my door tomorrow), and that includes my disbelief in God. The key thing to remember about certainty is that it is not knowledge. You can be 100% certain about something and still be wrong. Certainty is an attitude.

So really, if you think that the existence of god is unprovable, you are a 6 or 5, depending on your certainty. If you think that god is provable (or that the non-existence of god is unprovable) then you are either a 6.5 or a 7, again, depending on your level of certainty.