Theists, Atheists: What is your opinion on Agnostics?

Agnostics are not their own separate group. That's a common misconception. Gnosis deals with knowledge of spiritual things. Theism deals with belief in spiritual things. So to be an Atheist, you don't believe in a god. To be an Agnostic only means you don't think a god is known or knowable. So you can be an Agnostic-Atheist, which is what I lean towards. You can also be an Agnostic-Theist, and believe that a god may exist, but you don't think that god is knowable, or known to us. I don't believe in a god, but I basically leave the option open, because it's foolish to say something doesn't exist. Nobody can say that green elephants don't live on Neptune. You can find evidence to support that they most likely don't, but you can never prove it.