I'm surprised it took so long for a video like this to exist, explaining the Dark Urge and its circumstances.
Before Patch 7, I almost always played embrace Dark Urge because I greatly value the challenge of taking the evil path. Of course, embrace Dark Urge is a sad ending, considering the opportunity of his existence and his personality. But a sad ending doesn't mean it isn't a rewarding experience for the player. I greatly value being able to rethink the decisions my Dark Urge makes in each playthrough. Why does my Dark Urge make this decision, and what his moral perspective is, which can fluctuate depending on his own backstory and playstyle. One such point is "Who He Was" and Madeleine. Does he do evil to do good from his own moral perspective? Is he simply acting evil?
For me, questioning my decisions as a tragic character is a huge part of my enjoyment of the game. Personally, the embrace Dark Urge evil endings that arrived with Patch 7 didn't appeal to me, but that doesn't stop me from continuing to be "evil."
It's worth mentioning that I personally don't apply any moral lessons from the game to real life, or vice versa, to avoid any misunderstandings. It's a game meant to entertain me and that's exactly what it does.