And you are also, I assume, saying that no one else can know either (they may claim to know but they are mistaken).
No, I can only speak for myself. Others can 'know' that there is a god, but my claim will be that they are jumping to 'belief' with inadequate reasoning/evidence, etc.
The problem I have with calling this agosticism is that it is a position of certainty. There is never any doubt - whatever the question God can never be the explanation. To believe this would be to also be a strong atheist.
This is quite fascinating, in that I ran into the same exact objection 2 months ago, and then had to explain further. I'll explain myself now, but afterwards: could you tell whether I need to incorporate that into my initial argument, or whether I just have to always include it at the end of my argument? (which could possibly double it's length) I wonder if other people have a similar perception as yourself, and how many.
Agnosticism is the exact
opposite of certainty; it's primary concern is
humility. Agnosticism fully admits that we are primate descendants who just
don't have the ability to recognize something outside the universe. It is for this reason that we can
never know.
The only way that we could
possibly recognize something outside the universe, say, god/s, is if were gods
too.
The definition that I use for agnosticism is the same used by others, including Michael Shermer. I myself used a common different definition of it years ago, until finally someone told be that atheist does not mean 'there is no god'. Once atheist becomes 'non-belief in god' (with WHATEVER flavor of 'strong' or 'soft' or 'hard' or 'latte' that you want to throw in there), 'agnostic' meaning "I don't know" is pointless.
Therefore: why use that way? We should keep theist & atheist/non-theist for belief in god; agnostic's definition is much more useful talking about the knowledge of god/s (do I have the ability to know god/s exists?).
As for evidence: most theists believe they have 'evidence' for god/s' existence one way or another. This could be divine revelation, reasoning, belief in the accuracy of the Bible ('God exists because he said he does'), etc. I think there are a few who believe the evidence doesn't prove the existence of god/s, but believe anyway (mostly, deists).