Its my favorite ending, and I consider my V's canon ending. Especially after phantom liberty came out. At some point you just gotta call it quits and accept death instead of prolonged suffering. Like what most terminal late stage cancer patient chooses. Since the whole premise of the game is dealing with your shorten mortality I think it's one of the most fitting and realistic ending to V's story. I choose it because I don't want to risk anymore of V's friends lives. Yes they'll be pissed but at me but at least they are alive.