User blog comment:The Milkman/Mass Effect in Retrospect/@comment-173.189.226.12-20130418023302/@comment-4237253-20130418134216

And so what if they all die out? That's what the Reapers are doing anyway. How does liquefying a species preserve anything? If you're going to preserve them, why are you putting them in harm's way?

Also consider that the narrative does not supply any actual evidence that synthetics will wipe out all organics. That's an absolute statement, and one that is not backed by evidence.