Cyteen: I was firing off posts without reading the in between ones so it looked like I was responding to you the first time when I wasn't. I wish it hadn't looked that way.
Edam: I should have responded earlier: yes free will: but the existence of evil "pre-dates" free will: it must have been there as a menu option for us to choose. In fact it's an even simpler proof than my first: if you believe God created everything and evil exists, then you believe God created evil. If God created evil then he is not all good. You have to believe two logically opposing things at once and that is why faith is an absolute necessity.
UQD: "All you have demonstrated is that the definition of the Christian god, as given by Christians, is a logical paradox. If we take it at face value. But I'm sure someone could argue, if they wanted to, that this didn't preclude it from "existing"."
Don't know why you think this proves your point, it doesn't. Yes, I have demonstrated that the Christian God is a logical impossibility. You, as an atheist, do not have the privilege of moving beyond that, because you believe that a logical impossibility cannot exist. So it is possible to prove that the Christian God does not exist and obviously I'm not the first to do so and obviously there is more than one way to do it. Come on this is basic stuff: it's playing in the sandpits of religious discourse.
"I don't think it really matters, anyway. If something is so, so unlikely that it may as well not exist - which is what all gods are - you may as well behave as if they don't. It makes no difference."
Er what are you on about. "If something is so so unlikely.." I'm not saying unlikely, I'm saying it's impossible. The Christian God is, I think, unique in being a logical impossibility. Other religions are empirically implausible but most allow for a god who is angry and can be evil. It's built in to the religion. Kali in Hindusim, the angry God of the Old Testament etc. Christianity does not do this: it says all good, all powerful, all knowing, creator of everything. But evil exists and was created.
You said : it is impossible to prove God does not exist. Plainly it is not impossible at all. Christians can move beyond that and still believe because of faith -- faith that a logical impossibility can exist. That argument is not open to you.