notsurewheretogo - "JW's dismiss evolution along with many folks because they think evolution is a) a theory not proved and b) is the origin of life."
Not quite.
They do use those arguments to dismiss it, but they're not why they dismiss it.
JWs and other creationists reject evolution because their religious cosmology is dependent on the assumption that the Genesis creation narrative must be literal history (particularly regarding Adam and Eve in Eden).
If life - and by extension, humanity - evolved, then the events in Genesis did not actually happen, and by extension, the historicity of the Bible - and ultimately, the legitimacy of Christianity itself - is called into question.