To each their own.
For me, that was the satanic cultists in ck2. Having five straight generations kidnapped and sacrificed to Satan was ridiculously stupid.
Honestly, I just survived a house war with House Abbasid. With a single living member surviving.
I enjoyed the time that two houses in my dynasty started a house feud. Two of my vassals started a war, the Kings of Frisia and Denmark, they both called in their allies, which resulted in the nephew of the king of Ireland slaying the heir to Scotland in battle. The Scottish king killed the Irishman, who also happened to my Irish vassal's best friend, and secret son. The two vassals proceeded to massacre each others Houses, and that kept both out of the civil war that erupted after I died, and ended up with a 8 year old girl for an Empress.