I’m not spiritual, I have no faith I practice. I believe in science, that we’re all made of star-stuff. Big bang, Darwin, etc, save for the whole Atheists/Secular Humanists claiming some intellectual superiority over those that believe differently. The claim that you know there is no God feels contradictory to me. Based on my perception of the aforementioned, Agnostic is a much better fit, in that I would assert there is no possible way of knowing. Evolution is still a theory. Gravity is a theory. I feel that belief is altogether another thing, which doesn’t correlate to knowing or unknowing in the context those without faith understand it.