It is possible that my responses to you have incorrectly assumed that you hold this same stance.
just in case, I'll state my opinion.
No theist has met their burden of proof to me, to convince me there is a god.
I don't know how much evidence you require from me to back a claim that is an opinion.
I offered some, you continued asking.
I asked for insight on what you wanted, you decided you didn't need to answer.
I have never had someone push "back up your claim": on an opinion as much as you have, so admittedly, I'm out of my depths because I don't know what you want,. and you won't tell me.
Usually, the requirement for me to verify that "I haven't been convinced yet" is me stating I haven;'t been convinced yet.
I'm not stating no theist anywhere has ever met their burden of proof to anyone..
I'm stating no theist has met their burden of proof TO ME, to convince me that there is a god.
That is a claim, based off my personal experience, and it is an opinion. It is not a fact based claim.
I'm not claiming there is no god, because I haven't been convinced.
I'm not claiming people that believe in god are wrong, because I haven't been convinced.
I'm claiming no one has convinced me, and that is the reason that I personally don't believe.
So no, I really don't have to be any more specific than that.. My claim is backed up by my statement, because it is an opinion.
As you said before, a creationist COULD use the same statement. and that would be fine.. it is a claim based on an opinion.
If I then gave the creationist an argument AFTER that, and showed them specific data about DNA, or fossils, and they disagreed, I could then ask more pointed specific questions about why they deny that evidence.. But just the claim that "so far, I don't believe" doesn't require following evidence to back it up.
it is not a claim about existence or not, it is a claim about opinion and personal belief.