Yeah. Plus, Buffy actually got to make a choice there; not a good one, but a choice nonetheless, one which was entirely hers to make. Darla, on the other hand, even had a prophecy detailing what would happen to her. Come on. (Though I still love that last scene.)

Sooo much better than 'I realise now my sinful impurity; may the child be my salvation'.

Heh. Yeah. I do think that that implication is tempered (though not removed) by the fact that Darla really is a pretty horrible monster, and knows it. Then again, the Jossverse has an unfortunate tendency to use "mass-murdering soulless demon" as a metaphor for all sorts of real-life oppressed groups, so...