However:
1. When Lucien Lachance was killed for doing his duty, I thought that it was a bit sad. So I turned Arquen's essential status off and sent her to Sithis.
2. When that Dunmer guy who had his house taken by Ulrich Leland gets killed. After everything he went through too...that was pretty sad.
3. That fighter's guild quest where you have to kill the 'goblins' undercover. Seeing the father of the woman I helped mourn was pretty sad.
4. Molag Bal's quest was just wrong.
5. The 'Caught in the Hunt' quest. Going through all that just to see the poor guy get killed by the orc? Oh no, I don't think so.
However, this doesn't stop me doing the sad quests. What stops me doing them is whether the character I'm playing right then would do said quest.