I was amazed to realize that had I been the one at the controller, I most likely would have abandoned the quest -- and also that this decision would not have felt like "not completing the game," but rather like an alternative version of the story. My hero would have said, no, this is not worth it. I can't do this. And that's how my tale would have ended. It would have made sense.
I was floored that this game that said so little could make me feel so much.
That said, I obviously can't speak to the controls, so who knows how that would have affected my feelings.