I've played through this game about 6 times now, and every time I reach the Landsmeet, I still wrestle with whether or not to kill Loghain. Sure he's a paranoid psycho who potentially had your family murdered or enslaves depending on your background, but he's also a pretty sympathetic character and he gets some truly spectacular lines all delivered by the supremely talented Simon Templeton. Plus, after reading the tie-in novels, he's even more likeable. If only sparing him didn't drive equally likeable Alistair into despair.