Just as I originally posted this, I thought I saw a major error in it, and I quickly removed it, thinking it had some very flawed editing (as opposed to my usual semi-flawed editing). Then I figured out it was fine except my computer kept messing up my attempts to repaste some stuff. But here it is now, in its original form.
3. Gnostic Atheist - one who claims to know there is no god, and one who does not have a belief in one
How does a Gnostic atheist support their position?
We look at the world, see natural explanations for everything we can find explanations for, and see no reason to believe that the things that we don't yet have an explanation for are miracle or otherwise god-based, and conclude that no god is involved.
We look at all the gods proposed in this world and notice that nobody believes in all of them. We look at all the proposed gods in the world and see a pattern within the social and personal forces that create said gods, a pattern that seems to indicate that humans are real good at making stuff up. And real good at believing it. But there is no reason to think that such a said belief makes it true. Fantastic and impossible claims of great things that happened long ago are inadequate in this day and age. To suggest that a real god, who loves me and everyone else, is going to go missing for thousands of years, after being intimately involved with any given small and specially chosen group, is rather silly.
We look at the human mind. The one that seems to make almost everyone think they are real special, and the one that ignores the commonality of existence. We look at the fear of death that so many admit to having, and a very human need to rewrite reality so that it sounds good and seems survivable. We dismiss these Pollyannish desires for immortality and look at their source: religion. Which has so little good science in it that there is no reason to think they got the afterlife thingy right.
We look at the variations within any given religion. I looks at christianity, for instance, and see over 30,000 versions, and that causes me to suspect that if there is any truth behind the story, it is in amounts too minuscule to provide consistency. And that the more likely explanation is that there is no truth, making customization even easier.
If there appears to be no need for a god in nature and no evidence for a god anywhere we look; if the religious stories are universally inconsistent with reality, if religious claims of their history don't match other histories, and if there is no evidence that any given believer has any advantages over non-believers in any department (not counting their fantasy world, which is probably pretty cool at times), then there is no reason to give any serious thought to the existence of any of the claimed gods.
If the followers of any given religious group consistently lived better quality lives, longer lives, healthier lives, cancer-free/heart disease-free/arthritis-free, heartbreak-free, disaster-free, political turmoil-free lives, we would notice. And we would wonder why. And if their god seemed to be favoring them in some way and it was that apparent and unnatural things were happening that favored that group, I might rethink my position.
The law of averages says that there are probably intelligent beings elsewhere in the universe. And just as we probably appear as gods to our dogs and cats (hey, that god can open doors and get food out of those bags and take me to the vet in a wheeled vehicle with no visible means of propulsion) and it probably wouldn't take a much more advanced species than ours to look godlike to us. So there may well be forces in the universe that would appear both mysterious and miraculous to me. (Think how people would react to an iPad if we could transport one back to 1950). So there may be superior forces out there (I'm not saying that there are, but I certainly cannot claim that there are not), But I unhesitantly state that there are no gods. I don't know this for a fact. But I haven't got one single reason to think I might be wrong.
And the reason that my POV doesn't qualify as a belief is because if a god would suddenly show up, I'd change my mind. If he was a christian god or other heritage religion god, I'd be pretty unhappy with him. But I'd change my mind the minute proof to the contrary appeared. I am merely stating my current opinion, based on current knowledge. And on my unwillingness to play games with my own head.