"It would be funny if it turned out at the end of ME3 that the Reapers have been harvesting the galaxy for millions of years just to prepare themselves to ultimately fight an even greater threat (maybe their creators)... and in the end, as the last Reaper goes down in flames, Shepard finally realizes the Reapers were saviours, instead of destroyers, and that all (s)he has done is just dooming the galaxy to final extinction."