It's not the method I would have chosen, either, but to each his own.

[And honestly? Even disregarding the details, it spoke of how terribly Mo Xuanyu had suffered, that he'd go through such extreme measures to put an end to that suffering. Ending one's life was not so hard. In a twisted way, Wuxian could respect that Xuanyu hadn't wanted to let his tormentors live on after him.]

Nothing as subtle as that. But if you care to believe the stories, I'm single-handedly responsible for hundreds upon thousands of death, in addition to being a terrible person steeped in dark magic.