Christians/creationists don't understand what a "scientific THEORY" is. Why don't they want to know..?

They do want to know! I have spoken on behalf of evolution in many areas of the so-called "Bible Belt" and it turns out they've been deprived of theories. They just know evolution, for example, has something to do with "monkeys." I explained to many about natural selection, bottle-neck effects, and gene flow. They were more receptive than I thought [I went in expecting a very hostile environment!]