Why is it that...?

Well, it looks like we will have to agree to disagree. I can't see it being unreasonable to believe first in those things which are evidenced, while to compare those in likelihood to things that aren't is common strategy in life. The absence of such evidence might, yes, mean that we need not dismiss any other things out of hand, but at the same time the only reason to accept they might is through increasingly qualifying assumptions, beginning with the assumption that miracles exist, ultimately made without any quality control of thought. To say that something might happen, even though absolutely extraordinary and unnatural, 'because it would be a miracle' ought not to close off any rational questioning but instead be the start of it.