Well, I think it is based purely on “evidence”. Miracles are, by definition, little blips on the field of reality…
Do we overturn centuries of physical evidence supporting evolution when we affirm that Jesus was miraculously born? No. Of course not. Nor do we overturn all this physical evidence when we allow that God just may have miraculously created Adam and Eve.
But Creationists are not this measured and conservative. They are willing to ignore huge patterns of fossil and physical evidence … because of a few sentences in Genesis 1 and 2…
This is not part of the a reasoned and balanced spiritual viewpoint of your average scientist of Western Civilization!