Towerwatchman, you say you cant accept most Christians do not believe in a "supernatural intelligent designer"
Just as an example: I was brought up in a strict Catholic family, and went entirely to Catholic schools, taught by a mix if priests, nuns and secular teachers (mostly practising Catholics). (I have never been a JW - I found myself married to one.) I can specifically remember the point being made at school many times that Genesis should not be read literally. I remember one Jesuit priest saying it was "childish" (exact word) to think it literally occurred.
From talking to people and a bit of research, I can not identify ANY mainstream Christian religion that rejects evolution. The only ones I can identify that do reject evolution, are the fundamentalist ones, mostly from the USA.
I do agree, however, that pre-Darwin or thereabouts, most Christians were creationists.
The majority of Christian I know and have known do not believe in evolution.
You were probably born in USA, or at least exposed to a fundamentalist US religion from a young age. You were almost certainly indoctrinated with the "creation story" right from when you were a little baby. Your entire terms of reference for how you view the world around you, stems from that indoctrination. You seek evidence to support your viewpoint (aka confirmation bias). You are good at debating, and seek further comfort by projecting your views on others and shouting them down if they disagree.
How close am I?