Stargate-SG 1 implied that the timeline we saw in the show was arguably the best for Earth. In it, Earth and her allies got as far as they did while paying as low a price in life as possible. They generally seldom had to choose between survival and compromising their morals. We saw many realities where wrong decisions, more competent enemies, or sheer bad luck was enough to doom Earth or, at best, see it pay a much higher price for its eventual ascension as a galactic power.
This isn't a...