Some scientists can get reductionistic ab absurdo and they do go back to the primordial soup. Yet all know that the orgin of the universe is virtually beyond investigation, and thus, regard such speculation as...aimless speculation. When pressed, I think most scientists assume we can't know the origin of life or the universe.
Most that I have 'pressed' question the rationality of anyone who spends time thinking about it. The r square value is roughly 96 percent. Why do you figure scientists get so uneasy when the discussion devolves to beginnings?