I think for some people, me included, playing through something like that is fundamentally against how you view a "successful" game. I would rather play well with my deck running efficiently on all cylinders, and lose; than grinding out a win with a hero down.
Of course, I can't say I don't love moments like that when all hope seems lost, but you manage to pull off a last-second win. Very satisfying and Tolkien-esque.