It seems accepted among educated Westerners that the rationality of an action is a matter of means and ends, of what we want and whether what we do is going to bring that about.
That’s true even among people who consider themselves right-wingers, reactionaries, traditionalists and so on, and who in many ways really are so. I’ve complained about that tendency in Roger Scruton, and to my mind a recent discussion over at Bruce Charlton’s blog put it on display as well. It seemed impossible for many of those in the discussion to see the issue (contraception) from any other perspective. The problem was not that they thought consequences were relevant, but that they thought only consequences were relevant, and that raising other issues was simply nonsensical.