Originally Posted by
Fyraltari
The whole point of the scene is that Vaarsuvius was lying to themself about the resons why they took the deal in the first place.
V claimed they only took the deal to save their family but the fact that they didn't end it after said family was safe is proff enough that it wasn't true.
The Archfiends offered V another way out of their predicament (yes it wouldn't have worked but V thought it would have and that's what mattered) and V refused it because it involved forsaking their pride. V had spent their entire marriage ore concerned about their own search for power than their spouse and children's well-being. Even during the battle, they were more concerned with taking revenge on the black dragon for humiliating them in their mage-duel (up to bringing them back from the dead and comitting genocide to flex their new magic-muscles) than the effects on their infant children.
Quite frankly, I'm surprised this is in question in the first place.