Strictly speaking, most people who believe in the supernatural are also agnostic; people who self-identify as "agnostic" or "atheist" generally have the common usage of the terms in mind. Agnostics generally either hope or would prefer that some sort of benevolent supernatural system exists, or else the entire issue is just not something that is important to them personally, and not worth the hassle of taking a stand either way. Atheist (again, in common usage) tend to view the absence of the supernatural (and belief in the same) as a positive (as opposed to nuetral) thing in their own lives, and (for the militants) the lives of other people.
Personally, I think that most people are better off believing in the supernatural if they are capable, while a distinct (but not insignificant) minority are better off as "atheists". The rest of us fall somewhere in between, and are somewhat weary of repeated conversion attempts by either side.
That's probably true, and it's the main reason I'm not an anti-theist. If it makes people happy, go for it...just know where to draw the line when interacting with others.
My mother, for instance, is agnostic. She's also a Christian. She follows most general Christian ideals and attends a Christian church, but acknowledges that being human precludes her from having absolute certainty about this belief. She's what you'd call an agnostic theist. I don't agree with her position, but I do grant that it's more rational than any sort of gnostic belief.
I don't know if the guy I responded to there is actually an agnostic atheist, but his wording ("the dark side") sounded as if he buys into the anti-atheist stigma and may just be avoiding that label for that reason. In my experience, true "agnostics" as used in common terminology (those who are completely on the fence, neither agnostic theist nor agnostic atheist) are actually pretty rare--most people have a guess, but many agnostics don't want to call themselves atheists, out of a misunderstanding of what the term "atheist" actually implies. They think that all atheism is
gnostic atheism (i.e., "I am absolutely certain that all possible forms of God are completely false"), and that's simply untrue.