Really no reason to be condescending about your beliefs. You have your reasons, which I fully understand and probably largely support. I also am guessing there are entire sections of questions which your approach can't answer. You will say those questions are invalid or foolish questions, but that doesn't answer the questions.
As far as the gnosticism thing goes, I actually pulled those definitions from an atheist website a long time ago. I can't find the link right now, which is the reason I haven't posted it. However, I find the notion that an agnostic is
a person who holds that the existence of the ultimate cause, as God, and the essential nature of things are unknown and unknowable, or that human knowledge is limited to experience. , to be strange if gnosticism is defined in the specific and limited way you gave earlier. It does seem that its the most prevalent definition out there, but I think its odd that analyzing the word roots: the rejection of something very limited is defined as something so general. If I can find the particular atheist references that made the distinctions, I'll try to post them.