I'm not an agnostic, either.
Creationists commonly associate evolution and much else in science with atheism. Hence we're treated to a constant barrage of phrases like "atheistic evolution", "Godless cosmology" and "immoral science". They'll mix and match adjectives and nouns to their heart's content, but the message is always the same: those who reject creationist views are atheists who reject or even hate God.
When the ID controversy in Dover, Pennsylvania, erupted into public acrimony, those on the side of science were condemned as atheists. It didn't matter if you were a church going Christian who taught Bible class and ran a summer Bible camp (specifically, Bryan Rehm and his wife), if you were against creationism then you were an atheist.
I disagree with Creationists because they are wrong, deeply and fatally wrong. It has nothing to do with atheism.
--Percy
PS - Miscellaneous forum?