I could just tell everyone wants to jump into this issue yet again. I will make no comments in this thread that go beyond the author's presentation of the subject.
William Saletan writes 3 pieces in Slate
here, here, and
here. I don't read Slate but have heard through secondary sources that they are left of center. If that's true then they should be commended for the evenhanded presentation.
To read all three will require some investment in time but you'll be paid off in the end.